APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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