Mitchell, C. (1976). The perfect exercise: The hop, skip, and jump way to health. Simon and Schuster.
Cita Chicago (17th ed.)Mitchell, Curtis. The Perfect Exercise: The Hop, Skip, and Jump Way to Health. New York: Simon and Schuster, 1976.
Cita MLA (9th ed.)Mitchell, Curtis. The Perfect Exercise: The Hop, Skip, and Jump Way to Health. Simon and Schuster, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.