APA aipamena

Barr, R. C. (1939). Pre-college football. Frederick A. Stokes company.

Chicago Style aipamena

Barr, Robert Cooper. Pre-college Football. New York: Frederick A. Stokes company, 1939.

MLA aipamena

Barr, Robert Cooper. Pre-college Football. Frederick A. Stokes company, 1939.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.