The small sects in America.

MLA

Clark, Elmer T. The small sects in America. Revised edition. New York : Abingdon-Cokesbury Press, [1949]

APA

Clark, E. (1949). The small sects in America. Revised edition. New York : Abingdon-Cokesbury Press.

Chicago

Clark, Elmer T. The small sects in America. Revised edition. New York : Abingdon-Cokesbury Press, [1949]