Edwards, S.D. & Edwards, D.J. (2011). A Report on Psychological Well-Being and Physical Self-Perception in Five Sports Groups. African Journal for Physical Health Education, Recreation and Dance, 17(1), 9-21.
Horn, T.S. (2008). Advances in Sport Psychology. Human Kinetics.
Johnson, U. (2006). Sport Psychology-Past, Present and Future: The Perceptions of Swedish Sport Psychology Students. Athletic Insight: The Online Journal of Sport Psychology.
Kumar, P. & Shirotriya, A.K. (2010). 'Sports psychology' a crucial ingredient for athletes success: conceptual view. British Journal of Sports Medicine, 44(1), 155-156.