APA (7th ed.) Citation

R, D., S, A., & P, C. (2001). Has the world forgotten Bhopal? Lancet (London, England), 357(9258), 809. https://doi.org/10.1016/s0140-6736(05)71244-7

Chicago Style (17th ed.) Citation

R, Dhara, Acquilla S, and Cullinan P. "Has the World Forgotten Bhopal?" Lancet (London, England) 357, no. 9258 (2001): 809. https://doi.org/10.1016/s0140-6736(05)71244-7.

MLA (9th ed.) Citation

R, Dhara, et al. "Has the World Forgotten Bhopal?" Lancet (London, England), vol. 357, no. 9258, 2001, p. 809, https://doi.org/10.1016/s0140-6736(05)71244-7.