APA (7th ed.) Citation

Couper, M. P., Alexander, G. L., Zhang, N., Little, R. J., Maddy, N., Nowak, M. A., . . . Cole Johnson, C. (2010). Engagement and Retention: Measuring Breadth and Depth of Participant Use of an Online Intervention. JMIR Publications.

Chicago Style (17th ed.) Citation

Couper, Mick P., et al. Engagement and Retention: Measuring Breadth and Depth of Participant Use of an Online Intervention. JMIR Publications, 2010.

MLA (9th ed.) Citation

Couper, Mick P., et al. Engagement and Retention: Measuring Breadth and Depth of Participant Use of an Online Intervention. JMIR Publications, 2010.

Warning: These citations may not always be 100% accurate.