APA

James W., . (1950). The Principles of psychology. New York: Dover Publ.

Chicago

James William, . 1950. The Principles of psychology. New York: Dover Publ.

Harvard

James W., . (1950). The Principles of psychology. New York: Dover Publ.

MLA

James William, . The Principles of psychology. New York: Dover Publ. 1950.