APA (7th ed.) Citation

O'Donnell, A. M., Hmelo-Silver, C. E., & Erkens, G. (2006). Collaborative learning, reasoning, and technology. L. Erlbaum Associates.

Chicago Style (17th ed.) Citation

O'Donnell, Angela M., Cindy E. Hmelo-Silver, and Gijsbert Erkens. Collaborative Learning, Reasoning, and Technology. Mahwah, N.J.: L. Erlbaum Associates, 2006.

MLA (8th ed.) Citation

O'Donnell, Angela M., et al. Collaborative Learning, Reasoning, and Technology. L. Erlbaum Associates, 2006.