Citação norma APA

Fjerstad, M., Sivin, I., Lichtenberg, E. S., Trussell, J., Cleland, K., & Cullins, V. (2009). Effectiveness of medical abortion with mifepristone and buccal misoprostol through 59 gestational days.

Citação norma Chicago

Fjerstad, Mary, Irving Sivin, E Steve Lichtenberg, James Trussell, Kelly Cleland, and Vanessa Cullins. Effectiveness of Medical Abortion With Mifepristone and Buccal Misoprostol Through 59 Gestational Days. 2009.

Citação norma MLA

Fjerstad, Mary, et al. Effectiveness of Medical Abortion With Mifepristone and Buccal Misoprostol Through 59 Gestational Days. 2009.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.