APA (7th ed.) Citation

Claassen, H. (1963). Ronald encyclopedia of football (3d ed.). Ronald Press Co..

Chicago Style (17th ed.) Citation

Claassen, Harold. Ronald Encyclopedia of Football. 3d ed. New York: Ronald Press Co., 1963.

MLA (9th ed.) Citation

Claassen, Harold. Ronald Encyclopedia of Football. 3d ed. Ronald Press Co., 1963.