APA

United Nations. International Labour Office, . (1961). International definition and measurement of levels of living: and interim guide. New York: United Nations.

Chicago

United Nations. International Labour Office, . 1961. International definition and measurement of levels of living: and interim guide. New York: United Nations.

Harvard

United Nations. International Labour Office, . (1961). International definition and measurement of levels of living: and interim guide. New York: United Nations.

MLA

United Nations. International Labour Office, . International definition and measurement of levels of living: and interim guide. New York: United Nations. 1961.