Cita APA (7a ed.)

Ziegel, E., & Van Blarcom, C. C. (1972). Obstetric nursing. Macmillan.

Cita Chicago Style (17a ed.)

Ziegel, Erna, y Carolyn Conant Van Blarcom. Obstetric Nursing. New York: Macmillan, 1972.

Cita MLA (9a ed.)

Ziegel, Erna, y Carolyn Conant Van Blarcom. Obstetric Nursing. Macmillan, 1972.