APA-referens (7:e uppl.)

Richards, G., Aronson, J., Heneghan, C., Mahtani, K., Koshiaris, C., & Persaud, N. (2020). Relation between opioid consumption and inclusion of opioids in 137 national essential medicines lists. BMJ Publishing Group.

Chicago-referens (17:e uppl.)

Richards, GC, JK Aronson, C. Heneghan, KR Mahtani, C. Koshiaris, och N. Persaud. Relation Between Opioid Consumption and Inclusion of Opioids in 137 National Essential Medicines Lists. BMJ Publishing Group, 2020.

MLA-referens (9:e uppl.)

Richards, GC, et al. Relation Between Opioid Consumption and Inclusion of Opioids in 137 National Essential Medicines Lists. BMJ Publishing Group, 2020.