APA

Hellmuth N. M., Fundation for Latin American Anthropological Research, . (1973). Natural history of the maya area, an introductory bibliography. Guatemala, Guatemala: Fundation for Latin American Anthropological Research.

Chicago

Hellmuth Nicholas M, Fundation for Latin American Anthropological Research, . 1973. Natural history of the maya area, an introductory bibliography. Guatemala, Guatemala: Fundation for Latin American Anthropological Research.

Harvard

Hellmuth N. M., Fundation for Latin American Anthropological Research, . (1973). Natural history of the maya area, an introductory bibliography. Guatemala, Guatemala: Fundation for Latin American Anthropological Research.

MLA

Hellmuth Nicholas M, Fundation for Latin American Anthropological Research, . Natural history of the maya area, an introductory bibliography. Guatemala, Guatemala: Fundation for Latin American Anthropological Research. 1973.