APA (7th ed.) Citation

Christensen, H., Calear, A., Andersson, G., Thorndike, F., & Tait, R. (2012). Beyond efficacy: The depth and diversity of current internet interventions.

Chicago Style (17th ed.) Citation

Christensen, H., A. Calear, G. Andersson, F. Thorndike, and Robert Tait. Beyond Efficacy: The Depth and Diversity of Current Internet Interventions. 2012.

MLA (9th ed.) Citation

Christensen, H., et al. Beyond Efficacy: The Depth and Diversity of Current Internet Interventions. 2012.