APA
May K. A., Mahlmeister L. R., . (1990). Comprehensive maternity nursing. Philadelphia: Lippincott.
Chicago
May Katharyn A, Mahlmeister Laura Rose, . 1990. Comprehensive maternity nursing. Philadelphia: Lippincott.
Harvard
May K. A., Mahlmeister L. R., . (1990). Comprehensive maternity nursing. Philadelphia: Lippincott.
MLA
May Katharyn A, Mahlmeister Laura Rose, . Comprehensive maternity nursing. Philadelphia: Lippincott. 1990.