Cita APA (7a ed.)

Humphrey, J. A., & Palmer, S. H. (1987). Stressful life events and criminal homicide. Omega, 17(4), 299-308.

Cita Chicago Style (17a ed.)

Humphrey, John A., y Stuart H. Palmer. "Stressful Life Events and Criminal Homicide." Omega 17, no. 4 (1987): 299-308.

Cita MLA (9a ed.)

Humphrey, John A., y Stuart H. Palmer. "Stressful Life Events and Criminal Homicide." Omega, vol. 17, no. 4, 1987, pp. 299-308.