Cita APA (7a ed.)

Mussen, P. H., Eisenberg, N., & Eisenberg-Berg, N. (1977). Roots of caring, sharing, and helping: The development of prosocial behavior in children. Freeman.

Cita Chicago Style (17a ed.)

Mussen, Paul Henry, Nancy Eisenberg, y Nancy Eisenberg-Berg. Roots of Caring, Sharing, and Helping: The Development of Prosocial Behavior in Children. San Francisco: Freeman, 1977.

Cita MLA (8a ed.)

Mussen, Paul Henry, et al. Roots of Caring, Sharing, and Helping: The Development of Prosocial Behavior in Children. Freeman, 1977.