APA (7th ed.) Citation

PL, S., & TG, B. (2020). Covid-19, prison crowding, and release policies. BMJ (Clinical research ed.), 369, m1551. https://doi.org/10.1136/bmj.m1551

Chicago Style (17th ed.) Citation

PL, Simpson, and Butler TG. "Covid-19, Prison Crowding, and Release Policies." BMJ (Clinical Research Ed.) 369 (2020): m1551. https://doi.org/10.1136/bmj.m1551.

MLA (9th ed.) Citation

PL, Simpson, and Butler TG. "Covid-19, Prison Crowding, and Release Policies." BMJ (Clinical Research Ed.), vol. 369, 2020, p. m1551, https://doi.org/10.1136/bmj.m1551.