McDonald, D. (1 July 1954). "Dr. John Woodall and his treatment of the scurvy". Transactions of the Royal Society of Tropical Medicine and Hygiene. 48 (4): 360. doi:10.1016/0035-9203(54)90111-X. PMID13187571.
McDonald, D. (1 July 1954). "Dr. John Woodall and his treatment of the scurvy". Transactions of the Royal Society of Tropical Medicine and Hygiene. 48 (4): 360. doi:10.1016/0035-9203(54)90111-X. PMID13187571.