APA (7th ed.) Citation

Ruhe, V., & Zumbo, B. D. (2009). Evaluation in distance education and e-learning: The unfolding model. Guilford Press.

Chicago Style (17th ed.) Citation

Ruhe, Valerie, and Bruno D. Zumbo. Evaluation in Distance Education and E-learning: The Unfolding Model. New York, NY: Guilford Press, 2009.

MLA (9th ed.) Citation

Ruhe, Valerie, and Bruno D. Zumbo. Evaluation in Distance Education and E-learning: The Unfolding Model. Guilford Press, 2009.