Christopher M Spray

Motivation for physical activity in young people: entity and incremental beliefs about athletic ability

S. Biddle, N. Chatzisarantis, C. K. Wang, 2003, Journal of sports sciences.

Antecedents of perceived coach interpersonal behaviors: the coaching environment and coach psychological well- and ill-being.

Nikos Ntoumanis, N. Ntoumanis, I. Taylor, 2012, Journal of sport & exercise psychology.