Cita APA (7a ed.)

Beltran-Sanchez, H., & Preston, S. H. (2007). A New Method for Attributing Changes in Life Expectancy to Various Causes of Death, with Application to the United States. University of Pennsylvania Population Studies Center.

Cita Chicago Style (17a ed.)

Beltran-Sanchez, Hiram, y Samuel H. Preston. A New Method for Attributing Changes in Life Expectancy to Various Causes of Death, with Application to the United States. University of Pennsylvania Population Studies Center, 2007.

Cita MLA (9a ed.)

Beltran-Sanchez, Hiram, y Samuel H. Preston. A New Method for Attributing Changes in Life Expectancy to Various Causes of Death, with Application to the United States. University of Pennsylvania Population Studies Center, 2007.