Rippe, J. M., & Pang, J. F. (1992). The exercise exchange program. Simon & Schuster.
Cita Chicago (17th ed.)Rippe, James M., i Judy Fredal Pang. The Exercise Exchange Program. New York: Simon & Schuster, 1992.
Cita MLA (9th ed.)Rippe, James M., i Judy Fredal Pang. The Exercise Exchange Program. Simon & Schuster, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.