APA

Clark W. H., . (1951). The Oxford group. New York: Bookman Associates.

Chicago

Clark Walter Houston, . 1951. The Oxford group. New York: Bookman Associates.

Harvard

Clark W. H., . (1951). The Oxford group. New York: Bookman Associates.

MLA

Clark Walter Houston, . The Oxford group. New York: Bookman Associates. 1951.