APA-referens (7:e uppl.)

Bronfenbrenner, U., & Condry, J. C. (1970). Two worlds of childhood: U.S. and U.S.S.R. Russell Sage Foundation.

Chicago-referens (17:e uppl.)

Bronfenbrenner, Urie, och John C. Condry. Two Worlds of Childhood: U.S. and U.S.S.R. New York, New York: Russell Sage Foundation, 1970.

MLA-referens (9:e uppl.)

Bronfenbrenner, Urie, och John C. Condry. Two Worlds of Childhood: U.S. and U.S.S.R. Russell Sage Foundation, 1970.