Citazione Stile APA (7a Edizione)

Harmer, B., & Henderson, V. (1939). Textbook of the principle and practice of nursing. Macmillan.

Citazione stile Chigago Style (17a edizione)

Harmer, Bertha, e Virginia Henderson. Textbook of the Principle and Practice of Nursing. New York: Macmillan, 1939.

Citatione MLA (9a ed.)

Harmer, Bertha, e Virginia Henderson. Textbook of the Principle and Practice of Nursing. Macmillan, 1939.