Gaya APA

Langdon, E, J, M, &, B, G, , (. (1992). Portals of power: Shamanism in South America. . Albuquerque: Albuquerque University of New Mexico Press.

Gaya MLA

Langdon, E., Jean, Matteson, &, Baer,, Gerhard, , (ed.). "Portals of power: Shamanism in South America. ". Albuquerque: Albuquerque University of New Mexico Press, 1992. Buku.