APA (7th ed.) Citation

Walker, A., Leary, H., & Hmelo-Silver, C. (2015). Essential Readings in Problem-Based Learning: Exploring and Extending the Legacy of Howard S. Barrows.

Chicago Style (17th ed.) Citation

Walker, Andrew, Heather Leary, and Cindy Hmelo-Silver. Essential Readings in Problem-Based Learning: Exploring and Extending the Legacy of Howard S. Barrows. 2015.

MLA (9th ed.) Citation

Walker, Andrew, et al. Essential Readings in Problem-Based Learning: Exploring and Extending the Legacy of Howard S. Barrows. 2015.