APA (7th ed.) Citation

Vai, M., & Sosulski, K. (2011). Essentials of online course design: A standards-based guide. Routledge.

Chicago Style (17th ed.) Citation

Vai, Marjorie, and Kristen Sosulski. Essentials of Online Course Design: A Standards-based Guide. New York ; London: Routledge, 2011.

MLA (9th ed.) Citation

Vai, Marjorie, and Kristen Sosulski. Essentials of Online Course Design: A Standards-based Guide. Routledge, 2011.