Cita APA (7th ed.)
Fromm, E. (1964). The heart of man: Its genius for good and evil. Harper & Row.
Cita Chicago (17th ed.)
Fromm, Erich. The Heart of Man: Its Genius for Good and Evil. New York: Harper & Row, 1964.
Cita MLA (9th ed.)
Fromm, Erich. The Heart of Man: Its Genius for Good and Evil. Harper & Row, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.