Franklin

MLA

A List of the Publications of the United States Geological Survey, Not Including Topographical Maps. Washington: G.P.O., 1920.

APA

(1920). A list of the publications of the United States Geological Survey, not including topographical maps. Washington: G.P.O.

Chicago

A List of the Publications of the United States Geological Survey, Not Including Topographical Maps. Washington: G.P.O., 1920.