APA (7th ed.) Citation

Haines, F. (1938). Where did the plains Indians get their horses?

Chicago Style (17th ed.) Citation

Haines, Francis. Where Did the Plains Indians Get Their Horses? n.p, 1938.

MLA (8th ed.) Citation

Haines, Francis. Where Did the Plains Indians Get Their Horses? 1938.

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