Cita APA (7a ed.)
Stevenson, A. J., & Potter, J. E. (2015). Abortion access and state variation in observed unintended pregnancy. Contraception, 92(3), 227-234.
Cita Chicago Style (17a ed.)
Stevenson, Amanda Jean, y Joseph E. Potter. "Abortion Access and State Variation in Observed Unintended Pregnancy." Contraception 92, no. 3 (2015): 227-234.
Cita MLA (9a ed.)
Stevenson, Amanda Jean, y Joseph E. Potter. "Abortion Access and State Variation in Observed Unintended Pregnancy." Contraception, vol. 92, no. 3, 2015, pp. 227-234.
Precaución: Estas citas no son 100% exactas.