Cita APA (7a ed.)

Gwathmey, J. T. (1915). Tumbling for amateurs. American Sports Pub. Co.

Cita Chicago Style (17a ed.)

Gwathmey, James Tayloe. Tumbling for Amateurs. New York: American Sports Pub. Co, 1915.

Cita MLA (8a ed.)

Gwathmey, James Tayloe. Tumbling for Amateurs. American Sports Pub. Co, 1915.