Bandura, A.(1987).Self-regulation of motivation and action through goal systems.Cognitive perspectives on emotion and motivation.(Cognitive perspectives on emotion and motivation).:
Berger, B. G.,Owen, D. R.(1992).Mood alteration with yoga and swimming: Aerobic exercise may not be necessary.Perceptual and Motor Skills.75,1331-1343.
Berger, B. G.,Owen, D. R.(1992).Preliminary analysis of a causal relationship between swimming and stress reduction: Intense exercise may negate the effects.International Journal of Sport Psychology.23,70-85.