Hartmann, H. (1964). Essays on ego psychology: Selected problems in psychoanalytic theory. Intern. Univ. Press.
Chicago-viite (17. p.)Hartmann, Heinz. Essays on Ego Psychology: Selected Problems in Psychoanalytic Theory. New York: Intern. Univ. Press, 1964.
MLA-viite (8. p.)Hartmann, Heinz. Essays on Ego Psychology: Selected Problems in Psychoanalytic Theory. Intern. Univ. Press, 1964.
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