Freeman, R. B. (1963). Public health nursing practice (3rd ed.). Saunders.
Cita Chicago (17th ed.)Freeman, Ruth B. Public Health Nursing Practice. 3rd ed. Philadelphia: Saunders, 1963.
Cita MLA (9th ed.)Freeman, Ruth B. Public Health Nursing Practice. 3rd ed. Saunders, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.