Cita APA (7a ed.)

Cunningham, F. G., Leveno, K. J., Bloom, S. L., Dashe, J. S., Hoffman, B. L., Casey, B. M., & Spong, C. Y. (2019). Williams Obstetricia (25th ed.). McGraw-Hill Education LLC..

Cita Chicago Style (17a ed.)

Cunningham, F. Gary, Kenneth J. Leveno, Steven L. Bloom, Jodi S. Dashe, Barbara L. Hoffman, Brian M. Casey, y Catherine Y. Spong. Williams Obstetricia. 25th ed. New York, N.Y.: McGraw-Hill Education LLC., 2019.

Cita MLA (9a ed.)

Cunningham, F. Gary, et al. Williams Obstetricia. 25th ed. McGraw-Hill Education LLC., 2019.