Cita APA (7a ed.)

Shaffer, R., Edwards, D. B., & Gosling, D. L. (2019). Afghanistan’s internal and external factors. Terrorism and political violence, 31(6), 1360-1365. doi:10.1080/09546553.2019.1666556

Cita Chicago Style (17a ed.)

Shaffer, Ryan, David B. Edwards, y David L. Gosling. "Afghanistan’s Internal and External Factors." Terrorism and Political Violence 31, no. 6 (2019): 1360-1365. https://doi.org/10.1080/09546553.2019.1666556.

Cita MLA (9a ed.)

Shaffer, Ryan, et al. "Afghanistan’s Internal and External Factors." Terrorism and Political Violence, vol. 31, no. 6, 2019, pp. 1360-1365, https://doi.org/10.1080/09546553.2019.1666556.