APA

Besford P., . (1971). Encyclopedia of swimming. New York: St. Martin's Press.

Chicago

Besford Pat, . 1971. Encyclopedia of swimming. New York: St. Martin's Press.

Harvard

Besford P., . (1971). Encyclopedia of swimming. New York: St. Martin's Press.

MLA

Besford Pat, . Encyclopedia of swimming. New York: St. Martin's Press. 1971.