WHO Collaborative Study on Breast-feeding. (1981). Contemporary patterns of breast-feeding: Report on the WHO Collaborative Study on Breast-feeding. World Health Organization.
Chicagoスタイル(17版)引用形式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.
MLA(9版)引用形式WHO Collaborative Study on Breast-feeding. Contemporary Patterns of Breast-feeding: Report on the WHO Collaborative Study on Breast-feeding. World Health Organization, 1981.
警告: この引用は必ずしも正確ではありません.