APA (7e ed.) Bronvermelding

Cunningham, F. G., MacDonald, P. C., Gant, N. F., Leveno, K. J., & Gilstrap III, L. C. (1996). Obstetricia de Williams.

Chicago (17e ed.) Bronvermelding

Cunningham, F. Gary, Paul C. MacDonald, Norman F. Gant, Kenneth J. Leveno, en Larry C. Gilstrap III. Obstetricia De Williams. 1996.

MLA (9e ed.) Bronvermelding

Cunningham, F. Gary, et al. Obstetricia De Williams. 1996.