APA (7th ed.) Citation

Sheffy, L. F. (1933). The Spanish horse on the Great Plains. [publisher not identified].

Chicago Style (17th ed.) Citation

Sheffy, Lester Fields. The Spanish Horse on the Great Plains. [Place of publication not identified]: [publisher not identified], 1933.

MLA (8th ed.) Citation

Sheffy, Lester Fields. The Spanish Horse on the Great Plains. [publisher not identified], 1933.