Cita APA (7th ed.)

Williams, J. W., Pritchard, J. A., & MacDonald, P. C. 1. (1980). Williams Obstetrics (16th ed.). Appleton-Century-Crofts.

Cita Chicago (17th ed.)

Williams, J. Whitridge, Jack A. Pritchard, i Paul C. 1930 MacDonald. Williams Obstetrics. 16th ed. New York: Appleton-Century-Crofts, 1980.

Cita MLA (9th ed.)

Williams, J. Whitridge, et al. Williams Obstetrics. 16th ed. Appleton-Century-Crofts, 1980.