Callaway, B. J. (2002). Hildegard Peplau: Psychiatric nurse of the century. Springer Pub. Co..

Callaway, Barbara J. Hildegard Peplau: Psychiatric Nurse of the Century. New York: Springer Pub. Co., 2002.

Callaway, Barbara J. Hildegard Peplau: Psychiatric Nurse of the Century. Springer Pub. Co., 2002.