APA (7e ed.) Bronvermelding

George, J. B. (2002). Nursing theories: The base for professional nursing practice (5th ed.). Prentice Hall.

Chicago (17e ed.) Bronvermelding

George, Julia B. Nursing Theories: The Base for Professional Nursing Practice. 5th ed. Upper Saddle River, NJ: Prentice Hall, 2002.

MLA (9e ed.) Bronvermelding

George, Julia B. Nursing Theories: The Base for Professional Nursing Practice. 5th ed. Prentice Hall, 2002.