APA (7th ed.) Citation

Chen, Q., Allot, A., & Lu, Z. (2021). LitCovid: An open database of COVID-19 literature. Nucleic acids research, 49(D1), D1534-D1540. https://doi.org/10.1093/nar/gkaa952

Chicago Style (17th ed.) Citation

Chen, Qingyu, Alexis Allot, and Zhiyong Lu. "LitCovid: An Open Database of COVID-19 Literature." Nucleic Acids Research 49, no. D1 (2021): D1534-D1540. https://doi.org/10.1093/nar/gkaa952.

MLA (9th ed.) Citation

Chen, Qingyu, et al. "LitCovid: An Open Database of COVID-19 Literature." Nucleic Acids Research, vol. 49, no. D1, 2021, pp. D1534-D1540, https://doi.org/10.1093/nar/gkaa952.