APA-referens (7:e uppl.)

Higgins, A. C. (1921). The psychology of nursing. G. P. Putnam's sons.

Chicago-referens (17:e uppl.)

Higgins, Aileen Cleveland. The Psychology of Nursing. New York and London: G. P. Putnam's sons, 1921.

MLA-referens (8:e uppl.)

Higgins, Aileen Cleveland. The Psychology of Nursing. G. P. Putnam's sons, 1921.