APA (7th ed.) Citation

M, G., & DM, T. (1973). Closing volume. Lancet (London, England), 1(7795), 158. https://doi.org/10.1016/s0140-6736(73)90240-7

Chicago Style (17th ed.) Citation

M, Green, and Travis DM. "Closing Volume." Lancet (London, England) 1, no. 7795 (1973): 158. https://doi.org/10.1016/s0140-6736(73)90240-7.

MLA (9th ed.) Citation

M, Green, and Travis DM. "Closing Volume." Lancet (London, England), vol. 1, no. 7795, 1973, p. 158, https://doi.org/10.1016/s0140-6736(73)90240-7.