Franklin

MLA

Population Index Bibliography: Cumulated 1935-1968 by Authors and Geographical Areas; Geographical Index. Boston: G. K. Hall, 1971.

APA

(1971). Population index bibliography: cumulated 1935-1968 by authors and geographical areas; geographical index. Boston: G. K. Hall.

Chicago

Population Index Bibliography: Cumulated 1935-1968 by Authors and Geographical Areas; Geographical Index. Boston: G. K. Hall, 1971.