APA (7th ed.) Citation

H, F., Jr, H. C., CD, C., JK, W., RJ, W., & WT, S. (1974). Letter: Mortality among vinyl-chloride workers. Lancet (London, England), 2(7883), 784. https://doi.org/10.1016/s0140-6736(74)90982-9

Chicago Style (17th ed.) Citation

H, Falk, Heath CW Jr, Carter CD, Wagoner JK, Waxweiler RJ, and Stringer WT. "Letter: Mortality Among Vinyl-chloride Workers." Lancet (London, England) 2, no. 7883 (1974): 784. https://doi.org/10.1016/s0140-6736(74)90982-9.

MLA (9th ed.) Citation

H, Falk, et al. "Letter: Mortality Among Vinyl-chloride Workers." Lancet (London, England), vol. 2, no. 7883, 1974, p. 784, https://doi.org/10.1016/s0140-6736(74)90982-9.