Gaya APA

Schmuck, R, A., Schmuck, P, A. (1971, 1975). GROUP PROCESSES IN THE CLASSROOM . united states of america: Wm Bown Company Publishers.

Gaya MLA

Schmuck, Richard, A.., Schmuck, Patricia, A.. "GROUP PROCESSES IN THE CLASSROOM". united states of america: Wm Bown Company Publishers, 1971, 1975. Text.