Tetralogy of Fallot.

MLA

Apitz, Christian, et al. “Tetralogy of Fallot.” Lancet, vol. 374, no. 9699, Oct. 2009, pp. 1462–71. EBSCOhost, https://doi.org/10.1016/S0140-6736(09)60657-7.

APA

Apitz, C., Webb, G. D., & Readington, A. N. (2009). Tetralogy of Fallot. Lancet, 374(9699), 1462–1471. https://doi.org/10.1016/S0140-6736(09)60657-7

Chicago

Apitz, Christian, Gary D. Webb, and Andrew N. Readington. 2009. “Tetralogy of Fallot.” Lancet 374 (9699): 1462–71. doi:10.1016/S0140-6736(09)60657-7.