APA (7th ed.) Citation

Tunnell, J. A. (1981). Pedigree evaluation of four decades of quarter horse breeding. [publisher not identified].

Chicago Style (17th ed.) Citation

Tunnell, Jo Ann. Pedigree Evaluation of Four Decades of Quarter Horse Breeding. [Place of publication not identified]: [publisher not identified], 1981.

MLA (9th ed.) Citation

Tunnell, Jo Ann. Pedigree Evaluation of Four Decades of Quarter Horse Breeding. [publisher not identified], 1981.