APA (7th ed.) Citation

Ntoumanis, N., Barkoukis, V., & Thøgersen-Ntoumani, C. (2009). Developmental Trajectories of Motivation in Physical Education: Course, Demographic Differences, and Antecedents. American Psychological Association.

Chicago Style (17th ed.) Citation

Ntoumanis, Nikos, V. Barkoukis, and Cecilie Thøgersen-Ntoumani. Developmental Trajectories of Motivation in Physical Education: Course, Demographic Differences, and Antecedents. American Psychological Association, 2009.

MLA (9th ed.) Citation

Ntoumanis, Nikos, et al. Developmental Trajectories of Motivation in Physical Education: Course, Demographic Differences, and Antecedents. American Psychological Association, 2009.