Cita APA (7a ed.)

Yang, Q., Friedman, J., & Rasmussen, S. A. (2002). Mortality associated with Down's syndrome in the USA from 1983 to 1997: A population-based study. https://doi.org/10.1016/S0140-6736(02)08092-3

Cita Chicago Style (17a ed.)

Yang, Quanhe, J.M Friedman, y Sonja A. Rasmussen. Mortality Associated with Down's Syndrome in the USA from 1983 to 1997: A Population-based Study. 2002. https://doi.org/10.1016/S0140-6736(02)08092-3.

Cita MLA (9a ed.)

Yang, Quanhe, et al. Mortality Associated with Down's Syndrome in the USA from 1983 to 1997: A Population-based Study. 2002. https://doi.org/10.1016/S0140-6736(02)08092-3.