APA (7 वां संस्करण) प्रशस्ति पत्र

Hartmann, H. (1964). Essays on ego psychology: Selected problems in psychoanalytic theory. Intern. Univ. Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Hartmann, Heinz. Essays on Ego Psychology: Selected Problems in Psychoanalytic Theory. New York: Intern. Univ. Press, 1964.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Hartmann, Heinz. Essays on Ego Psychology: Selected Problems in Psychoanalytic Theory. Intern. Univ. Press, 1964.