APA
Hans Singer & United Nations Centre for Economics and Social Information, . (1972). Children in the strategy of development. United Nations, New York: .
Chicago
Hans Singer & United Nations Centre for Economics and Social Information, . 1972. Children in the strategy of development. United Nations, New York: .
Harvard
Hans Singer & United Nations Centre for Economics and Social Information, . (1972). Children in the strategy of development. United Nations, New York: .
MLA
Hans Singer & United Nations Centre for Economics and Social Information, . Children in the strategy of development. United Nations, New York: . 1972.