Physical activity and intrinsic motivation

MLA

Whitehead, James R. and President's Council on Physical Fitness and Sports (U.S.). Physical activity and intrinsic motivation. Washington, DC : President's Council on Physical Fitness and Sports, [1993]

APA

Whitehead, J. & President's Council on Physical Fitness and Sports (U.S.). (1993). Physical activity and intrinsic motivation. Washington, DC : President's Council on Physical Fitness and Sports.

Chicago

Whitehead, James R. and President's Council on Physical Fitness and Sports (U.S.). Physical activity and intrinsic motivation. Washington, DC : President's Council on Physical Fitness and Sports, [1993]