Gaya APA

Ladewig, P, W., London, M, L. (1990). Essentials of maternal-newborn nursing (2nd ed.). California: Addison-Wesley Nursing.

Gaya MLA

Ladewig, Patricia, Wieland., London, Marcia, L.. "Essentials of maternal-newborn nursing". 2nd ed. California: Addison-Wesley Nursing, 1990. Text.