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