1. Arabacı, R. (2009). Atitudes toward physical education and class preferences of Turkish secondary and high school students. İlköğretim Online, 8(1), 2-8.;
2. Barkoukis V., Tsorbatzoudis H., Grouios G. & Rodafinos A. (2005). The development of a physical education state anxiety scale: a preliminary study. Perceptual and Motor Skills, 100(1), 118-28.;
3. Barkoukis, V. (2007). Experience of State Anxiety in Physical Education, in Liukkonen, J., Auweele, Y. V., Vereijken, B., Alfermann, D. & Theodorakis, Y. (eds.): Psychology for physical educators: student in fokus (pp. 57-72 ). Champaign, IL: Human Kinetics.;
4. Bailey, R. (2006). Physical education and sport in schools: A review of benefits and outcomes. Journal of School Health, 76(8), 397-401.;
5. Bryan, C.L., & Solmon, M.A. (2012).Student motivation in physical education and engagement in physical activity. Journal of Sport Behavior, 35(3), 267-285.;