APA (7th ed.) Citation

T, H., & T, S. (1976). Letter: Neutropenia and iron therapy. Lancet (London, England), 2(7980), 310. https://doi.org/10.1016/s0140-6736(76)90759-5

Chicago Style (17th ed.) Citation

T, Hamblin, and Simmonds T. "Letter: Neutropenia and Iron Therapy." Lancet (London, England) 2, no. 7980 (1976): 310. https://doi.org/10.1016/s0140-6736(76)90759-5.

MLA (9th ed.) Citation

T, Hamblin, and Simmonds T. "Letter: Neutropenia and Iron Therapy." Lancet (London, England), vol. 2, no. 7980, 1976, p. 310, https://doi.org/10.1016/s0140-6736(76)90759-5.