Gambia; official standard names approved by the United States Board on Geographic Names.

MLA

United States. Gambia; official standard names approved by the United States Board on Geographic Names. Washington : U.S. Govt. Print. Off., 1968.

APA

United States. (1968). Gambia; official standard names approved by the United States Board on Geographic Names. Washington : U.S. Govt. Print. Off..

Chicago

United States. Gambia; official standard names approved by the United States Board on Geographic Names. Washington : U.S. Govt. Print. Off., 1968.