# Citation of PennyLane

**URL:** <https://discuss.pennylane.ai/t/citation-of-pennylane/8362>\
**Category:** PennyLane Help\
**Created:** [April 3, 2025, 10:18pm UTC](https://discuss.pennylane.ai/t/citation-of-pennylane/8362 "2025-04-03T22:18:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Classy](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/classy/32/3682_2.png) [@Classy](https://discuss.pennylane.ai/u/Classy)\
**Post date:** [April 3, 2025, 10:18pm UTC](https://discuss.pennylane.ai/t/citation-of-pennylane/8362/1 "2025-04-03T22:18:43Z")

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I was curious as to how citation would be done with PennyLane on a research paper. If I was getting equations from the codebook or say the article “Linear combination of unitaries and block encodings”, is there any built-in feature for citation?

I did find one article on PennyLane saying

## How to cite

If you are doing research using PennyLane, please cite

Ville Bergholm et al. _PennyLane: Automatic differentiation of hybrid quantum-classical computations._ 2018. [arXiv:1811.04968](https://arxiv.org/abs/1811.04968)

Is this still the most up to date way to cite PennyLane?

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**Author:** ![CatalinaAlbornoz](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/catalinaalbornoz/32/1196_2.png) [@CatalinaAlbornoz](https://discuss.pennylane.ai/u/CatalinaAlbornoz)\
**Post date:** [April 4, 2025, 3:27pm UTC](https://discuss.pennylane.ai/t/citation-of-pennylane/8362/2 "2025-04-04T15:27:06Z")

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Hi @Classy,

Thank you for citing PennyLane!

We have different citations for the PennyLane Codebook, the PennyLane library, and the PennyLane demos. I believe the article you’re referring to is the [demo](https://pennylane.ai/qml/demos/tutorial_lcu_blockencoding) that I add in the image below.

1. If you’re citing a PennyLane demo you can copy the citation on the right-hand menu of the demo (at the bottom right where it says Copy BibTex citation). You can change it to a different citation format, but keeping the same information. For the demo you mentioned this is the BibTex citation:

> @misc{JuanMiguelArrazola2023,  
> title = “Linear combination of unitaries and block encodings”,  
> author = “Juan Miguel Arrazola and Diego Guala and Jay Soni”,  
> year = “2023”,  
> month = “10”,  
> journal = “PennyLane Demos”,  
> publisher = “Xanadu”,  
> howpublished = “\url{[Linear combination of unitaries and block encodings | PennyLane Demos](https://pennylane.ai/qml/demos/tutorial_lcu_blockencoding)}”,  
> note = “Date Accessed: 2025-04-04”  
> }

1. If you’re using the [PennyLane Codebook](https://pennylane.ai/codebook) you can use the following citation:

> C. Albornoz, G. Alonso, M. Andrenkov, P. Angara, A. Asadi, A. Ballon, S. Bapat, L. Botelho, I. De Vlugt, O. Di Matteo, P. Downing, P. Finlay, A. Fumagalli, A. Gardhouse, J. Geoffrion, N. Girard, A. Hayes, J. Izaac, R. Janik, T. Kalajdzievski, A. Kanwar Singh, A. Khomchenko, N. Killoran, I. Kurečić, O. Landon-Cardinal, A. Martin, D. Nino, A. Otto, C. Pere, J. Pickering, K. Renaud, J. Soni, D. Wakeham, L. Young. PennyLane Codebook. 2024. [https://pennylane.ai/codebook](https://pennylane.ai/codebook)

1. If you’re using the [PennyLane _library_](https://github.com/pennylaneai/pennylane) you can cite it with the citation that you found already:

> Ville Bergholm et al. _PennyLane: Automatic differentiation of hybrid quantum-classical computations._ 2018. arXiv:1811.04968

I hope this helps!

 ![image](https://canada1.discourse-cdn.com/flex012/uploads/pennylane/original/2X/d/dc69fe6493705fe5e0ca55808f5115b751ae879b.png)