APA   Click to copy
Walker, A. P., Fan, H., Keown, J. R., Grimes, J. M., & Fodor, E. (2021). Identification of guanylyltransferase activity in the SARS-CoV-2 RNA polymerase. BioRxiv, 2021–2003.

Chicago/Turabian   Click to copy
Walker, Alexander P, Haitian Fan, Jeremy R Keown, Jonathan M Grimes, and Ervin Fodor. “Identification of Guanylyltransferase Activity in the SARS-CoV-2 RNA Polymerase.” bioRxiv (2021): 2021–03.

MLA   Click to copy
Walker, Alexander P., et al. “Identification of Guanylyltransferase Activity in the SARS-CoV-2 RNA Polymerase.” BioRxiv, Cold Spring Harbor Laboratory, 2021, pp. 2021–03.

@article{walker2021a,
  title = {Identification of guanylyltransferase activity in the SARS-CoV-2 RNA polymerase},
  year = {2021},
  journal = {bioRxiv},
  pages = {2021--03},
  publisher = {Cold Spring Harbor Laboratory},
  author = {Walker, Alexander P and Fan, Haitian and Keown, Jeremy R and Grimes, Jonathan M and Fodor, Ervin}
}