Ewers, J. C. (1955). The horse in Blackfoot indian culture: With comparative material from other western tribes. United States Government.
Cita Chicago (17th ed.)Ewers, John C. The Horse in Blackfoot Indian Culture: With Comparative Material from Other Western Tribes. Washington: United States Government, 1955.
Cita MLA (9th ed.)Ewers, John C. The Horse in Blackfoot Indian Culture: With Comparative Material from Other Western Tribes. United States Government, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.