Dyfyniad APA

Hickman, M., & Wigginton, E. O. (2009). Cooperative problem-solving activities for social studies, grades 6-12 (2nd ed.). Corwin Press, Inc.

Dyfyniad Arddull Chicago

Hickman, Michael, and Erin O'Donnell Wigginton. Cooperative Problem-solving Activities for Social Studies, Grades 6-12. 2nd ed. Thousand Oaks, Calif: Corwin Press, Inc, 2009.

Dyfyniad MLA

Hickman, Michael, and Erin O'Donnell Wigginton. Cooperative Problem-solving Activities for Social Studies, Grades 6-12. 2nd ed. Corwin Press, Inc, 2009.

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