Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.