Cita APA (7a ed.)

Campbell, W. L., Jalbert, S., & Swan, H. (2017). National variations in fieldwork goals, training, and activities. Federal probation, 81(3), 15-21.

Cita Chicago Style (17a ed.)

Campbell, Walter L., Sarah Jalbert, y Holly Swan. "National Variations in Fieldwork Goals, Training, and Activities." Federal Probation 81, no. 3 (2017): 15-21.

Cita MLA (9a ed.)

Campbell, Walter L., et al. "National Variations in Fieldwork Goals, Training, and Activities." Federal Probation, vol. 81, no. 3, 2017, pp. 15-21.