Kaplan, M. S., & Geling, O. (1999). Sociodemographic and geographic patterns of firearm suicide in the United States, 1989-1993. Health & place, 5(2), 179-185. doi:10.1016/S1353-8292(99)00007-6
Cita Chicago Style (17a ed.)Kaplan, Mark S., y Olga Geling. "Sociodemographic and Geographic Patterns of Firearm Suicide in the United States, 1989-1993." Health & Place 5, no. 2 (1999): 179-185. https://doi.org/10.1016/S1353-8292(99)00007-6.
Cita MLA (9a ed.)Kaplan, Mark S., y Olga Geling. "Sociodemographic and Geographic Patterns of Firearm Suicide in the United States, 1989-1993." Health & Place, vol. 5, no. 2, 1999, pp. 179-185, https://doi.org/10.1016/S1353-8292(99)00007-6.
Precaución: Estas citas no son 100% exactas.