APA ציטוט

van den Berg, M. H., Schoones, J. W., & Vliet Vlieland, T. P. (2007). Internet-Based Physical Activity Interventions: A Systematic Review of the Literature. Gunther Eysenbach.

Citação norma Chicago

van den Berg, Marleen H., Johannes W. Schoones, and Theodora PM Vliet Vlieland. Internet-Based Physical Activity Interventions: A Systematic Review of the Literature. Gunther Eysenbach, 2007.

ציטוט MLA

van den Berg, Marleen H., Johannes W. Schoones, and Theodora PM Vliet Vlieland. Internet-Based Physical Activity Interventions: A Systematic Review of the Literature. Gunther Eysenbach, 2007.