Johnson, D. W., Johnson, R. T., & Smith, K. A. (2006). Active learning: Cooperation in the college classroom (3a. ed.). Interaction Book Company.
Chicago-čujuhus (17. p.)Johnson, David W., Roger T. Johnson, juo Karl A. Smith. Active Learning: Cooperation in the College Classroom. 3a. ed. Interaction Book Company, 2006.
MLA-čujuhus (9. p.)Johnson, David W., et al. Active Learning: Cooperation in the College Classroom. 3a. ed. Interaction Book Company, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.