APA

Cowan J. L., . (1968). Pleasure and pain: a study in philosophical psychology. New York: St. Martin's Press.

Chicago

Cowan Joseph Lloyd, . 1968. Pleasure and pain: a study in philosophical psychology. New York: St. Martin's Press.

Harvard

Cowan J. L., . (1968). Pleasure and pain: a study in philosophical psychology. New York: St. Martin's Press.

MLA

Cowan Joseph Lloyd, . Pleasure and pain: a study in philosophical psychology. New York: St. Martin's Press. 1968.