Cite
Validity of stage assessment in the adoption and maintenance of physical activity and fruit and vegetable consumption.
MLA
Lippke, Sonia, et al. “Validity of Stage Assessment in the Adoption and Maintenance of Physical Activity and Fruit and Vegetable Consumption.” Health Psychology : Official Journal of the Division of Health Psychology, American Psychological Association, vol. 28, no. 2, Mar. 2009, pp. 183–93. EBSCOhost, https://doi.org/10.1037/a0012983.
APA
Lippke, S., Ziegelmann, J. P., Schwarzer, R., & Velicer, W. F. (2009). Validity of stage assessment in the adoption and maintenance of physical activity and fruit and vegetable consumption. Health Psychology : Official Journal of the Division of Health Psychology, American Psychological Association, 28(2), 183–193. https://doi.org/10.1037/a0012983
Chicago
Lippke, Sonia, Jochen P Ziegelmann, Ralf Schwarzer, and Wayne F Velicer. 2009. “Validity of Stage Assessment in the Adoption and Maintenance of Physical Activity and Fruit and Vegetable Consumption.” Health Psychology : Official Journal of the Division of Health Psychology, American Psychological Association 28 (2): 183–93. doi:10.1037/a0012983.