Pauling, L. (1970). Vitamin C and the common cold. W. H. Freeman.
Cita Chicago (17th ed.)Pauling, Linus. Vitamin C and the Common Cold. San Francisco: W. H. Freeman, 1970.
Cita MLA (8th ed.)Pauling, Linus. Vitamin C and the Common Cold. W. H. Freeman, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.