M. Boyd

Behavioral and Cognitive Correlates of Exercise Self-Schemata

Z. Yin, M. Boyd, 2000, The Journal of psychology.

Task and ego goal perspectives in organized youth sport.

J. Callaghan, M. Boyd, 1994 .

The Relationship of Physical Self-Perceptions and Goal Orientations to Intrinsic Motivation for Exercise

Z. Yin, Zenong Yin, C. Weinmann, 2002 .

Cognitive-affective sources of sport enjoyment in adolescent sport participants.

Z. Yin, M P Boyd, Z Yin, 1996, Adolescence.