APA (7th ed.) Citation

Yli-Piipari, S. (2011). The development of students' physical education motivation and physical activity: A 3.5.-year longitudinal study across grades 6 to 9.

Chicago Style (17th ed.) Citation

Yli-Piipari, Sami. The Development of Students' Physical Education Motivation and Physical Activity: A 3.5.-year Longitudinal Study Across Grades 6 to 9. Jyväskylä, 2011.

MLA (9th ed.) Citation

Yli-Piipari, Sami. The Development of Students' Physical Education Motivation and Physical Activity: A 3.5.-year Longitudinal Study Across Grades 6 to 9. 2011.