Tyrrell, D. A. J. (1965). Common colds and related diseases. E.Arnold.
Cita Chicago (17th ed.)Tyrrell, D. A. J. Common Colds and Related Diseases. Lond.: E.Arnold, 1965.
Cita MLA (8th ed.)Tyrrell, D. A. J. Common Colds and Related Diseases. E.Arnold, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.