Cita APA (7a ed.)

Kaplan, M. S., & Geling, O. (1998). Firearm suicides and homicides in the United States: Regional variations and patterns of gun ownership. Social science & medicine, 46(9), 1227-1233. doi:10.1016/S0277-9536(97)10051-X

Cita Chicago Style (17a ed.)

Kaplan, Mark S., y Olga Geling. "Firearm Suicides and Homicides in the United States: Regional Variations and Patterns of Gun Ownership." Social Science & Medicine 46, no. 9 (1998): 1227-1233. https://doi.org/10.1016/S0277-9536(97)10051-X.

Cita MLA (9a ed.)

Kaplan, Mark S., y Olga Geling. "Firearm Suicides and Homicides in the United States: Regional Variations and Patterns of Gun Ownership." Social Science & Medicine, vol. 46, no. 9, 1998, pp. 1227-1233, https://doi.org/10.1016/S0277-9536(97)10051-X.