APA (7th ed.) Citation

Killinger, W. G., & Tracy, K. C. (1939). Football (15th printing.). A.S. Barnes and Company.

Chicago Style (17th ed.) Citation

Killinger, William Glenn, and Katherine C. Tracy. Football. 15th printing. New York: A.S. Barnes and Company, 1939.

MLA (9th ed.) Citation

Killinger, William Glenn, and Katherine C. Tracy. Football. 15th printing. A.S. Barnes and Company, 1939.

Warning: These citations may not always be 100% accurate.