WHO Collaborative Study on Breast-feeding. (1981). Contemporary patterns of breast-feeding: Report on the WHO Collaborative Study on Breast-feeding. World Health Organization.
Citación estilo ChicagoWHO 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 MLAWHO Collaborative Study on Breast-feeding. Contemporary Patterns of Breast-feeding: Report on the WHO Collaborative Study on Breast-feeding. World Health Organization, 1981.
Warning: These citations may not always be 100% accurate.