Cita APA (7a ed.)

WHO Collaborative Study on Breast-feeding. (1981). Contemporary patterns of breast-feeding: Report on the WHO Collaborative Study on Breast-feeding. World Health Organization.

Cita Chicago Style (17a ed.)

WHO Collaborative Study on Breast-feeding. Contemporary Patterns of Breast-feeding: Report on the WHO Collaborative Study on Breast-feeding. Geneva: World Health Organization, 1981.

Cita MLA (9a ed.)

WHO Collaborative Study on Breast-feeding. Contemporary Patterns of Breast-feeding: Report on the WHO Collaborative Study on Breast-feeding. World Health Organization, 1981.