Gray, H. E. (1992). Ni-kso-ko-wa: Blackfoot spirituality, traditions, values and beliefs. Spirit Talk Press.
Style de citation Chicago (17e éd.)Gray, Harold E. Ni-kso-ko-wa: Blackfoot Spirituality, Traditions, Values and Beliefs. Browning, Mont.: Spirit Talk Press, 1992.
Style de citation MLA (8e éd.)Gray, Harold E. Ni-kso-ko-wa: Blackfoot Spirituality, Traditions, Values and Beliefs. Spirit Talk Press, 1992.
Attention : ces citations peuvent ne pas être correctes à 100%.