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Douglas, R.; Hemilä, H.; Chalker, E.; Treacy, B. (2007). Hemilä, Harri. ur. „Vitamin C for preventing and treating the common cold”. Cochrane Database of Systematic Reviews (3): CD000980. DOI:10.1002/14651858.CD000980.pub3. PMID17636648.edit
Gorton, HC; Jarvis, K (Oct 1999). „The effectiveness of vitamin C in preventing and relieving the symptoms of virus-induced respiratory infections.”. Journal of manipulative and physiological therapeutics22 (8): 530–3. DOI:10.1016/S0161-4754(99)70005-9. PMID10543583.
Heimer, K. A.; Hart, A. M.; Martin, L. G.; Rubio-Wallace, S. (2009). „Examining the evidence for the use of vitamin C in the prophylaxis and treatment of the common cold”. Journal of the American Academy of Nurse Practitioners21 (5): 295. DOI:10.1111/j.1745-7599.2009.00409.x. PMID19432914.edit
Douglas, R.; Hemilä, H.; Chalker, E.; Treacy, B. (2007). Hemilä, Harri. ur. „Vitamin C for preventing and treating the common cold”. Cochrane Database of Systematic Reviews (3): CD000980. DOI:10.1002/14651858.CD000980.pub3. PMID17636648.edit
Gorton, HC; Jarvis, K (Oct 1999). „The effectiveness of vitamin C in preventing and relieving the symptoms of virus-induced respiratory infections.”. Journal of manipulative and physiological therapeutics22 (8): 530–3. DOI:10.1016/S0161-4754(99)70005-9. PMID10543583.
Heimer, K. A.; Hart, A. M.; Martin, L. G.; Rubio-Wallace, S. (2009). „Examining the evidence for the use of vitamin C in the prophylaxis and treatment of the common cold”. Journal of the American Academy of Nurse Practitioners21 (5): 295. DOI:10.1111/j.1745-7599.2009.00409.x. PMID19432914.edit
Douglas, R.; Hemilä, H.; Chalker, E.; Treacy, B. (2007). Hemilä, Harri. ur. „Vitamin C for preventing and treating the common cold”. Cochrane Database of Systematic Reviews (3): CD000980. DOI:10.1002/14651858.CD000980.pub3. PMID17636648.edit
Heimer, K. A.; Hart, A. M.; Martin, L. G.; Rubio-Wallace, S. (2009). „Examining the evidence for the use of vitamin C in the prophylaxis and treatment of the common cold”. Journal of the American Academy of Nurse Practitioners21 (5): 295. DOI:10.1111/j.1745-7599.2009.00409.x. PMID19432914.edit