APA引文

Mussen, P., & Eisenberg-Berg, N. (1977). Roots of caring, sharing, and helping. W H Freeman & Co..

Chicago Edition Citation

Mussen, Paul, and Nancy Eisenberg-Berg. Roots of Caring, Sharing, and Helping. San Francisco: W H Freeman & Co., 1977.

MLA引文

Mussen, Paul, and Nancy Eisenberg-Berg. Roots of Caring, Sharing, and Helping. W H Freeman & Co., 1977.