Cita APA (7a ed.)

Edgar, K., & O'Donnell, I. (1998). Mandatory drug testing in prisons - an evaluation. Research findings, 75, 1-4.

Cita Chicago Style (17a ed.)

Edgar, Kimmett, y Ian O'Donnell. "Mandatory Drug Testing in Prisons - an Evaluation." Research Findings 75 (1998): 1-4.

Cita MLA (8a ed.)

Edgar, Kimmett, y Ian O'Donnell. "Mandatory Drug Testing in Prisons - an Evaluation." Research Findings, 75, 1998, pp. 1-4.