Johnson, D. W., & Johnson, R. T. (1994). Learning together and alone : cooperative, competitive, and individualistic learning / David W. Johnson, Roger T. Johnson: Cooperative, competitive, and individualistic learning (4th ed.). Allyn and Bacon.
Chicago Style (17th ed.) CitationJohnson, David W., and Roger T. Johnson. Learning Together and Alone : Cooperative, Competitive, and Individualistic Learning / David W. Johnson, Roger T. Johnson: Cooperative, Competitive, and Individualistic Learning. 4th ed. Needham Heights, MA ; London: Allyn and Bacon, 1994.
MLA (9th ed.) CitationJohnson, David W., and Roger T. Johnson. Learning Together and Alone : Cooperative, Competitive, and Individualistic Learning / David W. Johnson, Roger T. Johnson: Cooperative, Competitive, and Individualistic Learning. 4th ed. Allyn and Bacon, 1994.