APA (7th ed.) Citation

Barkoukis, V., Ntoumanis, N., & Thøgersen-Ntoumani, C. (2010). Developmental changes in achievement motivation and affect in physical education: Growth trajectories and demographic differences. Elsevier BV.

Chicago Style (17th ed.) Citation

Barkoukis, V., Nikos Ntoumanis, and Cecilie Thøgersen-Ntoumani. Developmental Changes in Achievement Motivation and Affect in Physical Education: Growth Trajectories and Demographic Differences. Elsevier BV, 2010.

MLA (9th ed.) Citation

Barkoukis, V., et al. Developmental Changes in Achievement Motivation and Affect in Physical Education: Growth Trajectories and Demographic Differences. Elsevier BV, 2010.