APA

Caples J., . (1961). Tested advertising methods. New York: Harper & Row.

Chicago

Caples John, . 1961. Tested advertising methods. New York: Harper & Row.

Harvard

Caples J., . (1961). Tested advertising methods. New York: Harper & Row.

MLA

Caples John, . Tested advertising methods. New York: Harper & Row. 1961.