Gaya APA

al., E. et al (2022). Briggs Drugs In Pregnancy And Lactation: A Reference Guide To Fetal And Neonatal Risk (20th Ed.). Philadelphia: Wolters Kluwer.

Gaya MLA

al., Et. et al. "Briggs Drugs In Pregnancy And Lactation: A Reference Guide To Fetal And Neonatal Risk". 20th Ed. Philadelphia: Wolters Kluwer, 2022. Text.