Cita APA (7a ed.)

Hellson, J. C., & Gadd, M. (1974). Ethnobotany of the Blackfoot Indians. National Museums of Canada.

Cita Chicago Style (17a ed.)

Hellson, John C., y Morgan Gadd. Ethnobotany of the Blackfoot Indians. Ottawa: National Museums of Canada, 1974.

Cita MLA (8a ed.)

Hellson, John C., y Morgan Gadd. Ethnobotany of the Blackfoot Indians. National Museums of Canada, 1974.