RD, H., & MP, H. (1948). Sleeping sickness of an unusual type in Sierra Leone and its attempted control. Transactions of the Royal Society of Tropical Medicine and Hygiene, 41(4), 481. https://doi.org/10.1016/s0035-9203(48)90747-0
Chicago Style (17th ed.) CitationRD, HARDING, and HUTCHINSON MP. "Sleeping Sickness of an Unusual Type in Sierra Leone and Its Attempted Control." Transactions of the Royal Society of Tropical Medicine and Hygiene 41, no. 4 (1948): 481. https://doi.org/10.1016/s0035-9203(48)90747-0.
MLA (9th ed.) CitationRD, HARDING, and HUTCHINSON MP. "Sleeping Sickness of an Unusual Type in Sierra Leone and Its Attempted Control." Transactions of the Royal Society of Tropical Medicine and Hygiene, vol. 41, no. 4, 1948, p. 481, https://doi.org/10.1016/s0035-9203(48)90747-0.