APA (7th ed.) Citation

Troppmann, R. (1983). Footballs new master defense guide. Parker Publ.

Chicago Style (17th ed.) Citation

Troppmann, Robert. Footballs New Master Defense Guide. Parker Publ, 1983.

MLA (8th ed.) Citation

Troppmann, Robert. Footballs New Master Defense Guide. Parker Publ, 1983.

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