APA   Click to copy
Schfer, B., Verma, R., Giri, A., He, H., Nagendra, S. M., Khare, M., & Beck, C. (2020). Covid-19 impact on air quality in megacities. ArXiv Preprint ArXiv:2007.00755.

Chicago/Turabian   Click to copy
Schfer, Benjamin, Rulan Verma, Aswin Giri, Hankun He, SM Nagendra, Mukesh Khare, and Christian Beck. “Covid-19 Impact on Air Quality in Megacities.” arXiv preprint arXiv:2007.00755 (2020).

MLA   Click to copy
Schfer, Benjamin, et al. “Covid-19 Impact on Air Quality in Megacities.” ArXiv Preprint ArXiv:2007.00755, 2020.

@article{schfer2020a,
  title = {Covid-19 impact on air quality in megacities},
  year = {2020},
  journal = {arXiv preprint arXiv:2007.00755},
  author = {Schfer, Benjamin and Verma, Rulan and Giri, Aswin and He, Hankun and Nagendra, SM and Khare, Mukesh and Beck, Christian}
}