Cita APA (7th ed.)
(1964). Introduction to respiratory diseases (ed.). National Tuberculosis Association.
Cita Chicago (17th ed.)
Introduction to Respiratory Diseases. ed. U.S.A: National Tuberculosis Association, 1964.
Cita MLA (9th ed.)
Introduction to Respiratory Diseases. ed. National Tuberculosis Association, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.