Karl Abraham, “Notes on the Psycho-Analytical Investigation and Treatment of Manic-Depressive and Allied Conditions,” in The Meaning of Despair, ed. Willard Gaylin, (New York, 1968), pp. 26–49; Sigmund Freud, “Mourning and Melancholia,” in The Meaning of Despair, ed. Willard Gaylin, pp. 50–69.
