Cita APA

Royston, E., & Armstrong, S. (1989). Preventing maternal deaths. Geneva: World Health Organization.

Citación estilo Chicago

Royston, Erica, y Sue Armstrong. Preventing Maternal Deaths. Geneva: World Health Organization, 1989.

Cita MLA

Royston, Erica, y Sue Armstrong. Preventing Maternal Deaths. Geneva: World Health Organization, 1989.

Precaución: Estas citas no son 100% exactas.