Cita APA

American Geographical Society of New York, & American Geographical Society of New York. (1947). The Orinoco-ventuari region Venezuela; Phelps expedition 1947. Nueva York: [editor no identificado].

Citación estilo Chicago

American Geographical Society of New York, y American Geographical Society of New York. The Orinoco-ventuari Region Venezuela; Phelps Expedition 1947. Nueva York: [editor no identificado], 1947.

Cita MLA

American Geographical Society of New York, y American Geographical Society of New York. The Orinoco-ventuari Region Venezuela; Phelps Expedition 1947. Nueva York: [editor no identificado], 1947.