Cita APA (7a ed.)

Douglas, F. H., & Jeançon, J. A. (1931). The Blackfoot indians. Denver Art Museum.

Cita Chicago Style (17a ed.)

Douglas, Frederic H., y Jean Allard Jeançon. The Blackfoot Indians. Denver: Denver Art Museum, 1931.

Cita MLA (9a ed.)

Douglas, Frederic H., y Jean Allard Jeançon. The Blackfoot Indians. Denver Art Museum, 1931.