Citazione Stile APA (7a Edizione)

Orem, D. E. (1980). Nursing: Concepts of practice (2d ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Orem, Dorothea E. Nursing: Concepts of Practice. 2d ed. New York: McGraw-Hill, 1980.

Citatione MLA (9a ed.)

Orem, Dorothea E. Nursing: Concepts of Practice. 2d ed. McGraw-Hill, 1980.