APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Armstrong, Sue, and Erica Royston. Preventing Maternal Deaths. World Health Organization, 1989.