Callaway, B. J. (2002). Hildegard Peplau: Psychiatric nurse of the century. Springer Pub. Co..
Lua i Stíl Chicago (17ú heag.)Callaway, Barbara J. Hildegard Peplau: Psychiatric Nurse of the Century. New York: Springer Pub. Co., 2002.
Lua MLA (9ú heag.)Callaway, Barbara J. Hildegard Peplau: Psychiatric Nurse of the Century. Springer Pub. Co., 2002.
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