Cita APA (7a ed.)

Ball, J. C., & Ross, A. (1991). The effectiveness of methadone maintenance treatment: Patients, programs, services, and outcome (1. [print.].). Springer.

Cita Chicago Style (17a ed.)

Ball, John C., y Alan Ross. The Effectiveness of Methadone Maintenance Treatment: Patients, Programs, Services, and Outcome. 1. [print.]. Berlin Heidelberg [u.a.]: Springer, 1991.

Cita MLA (8a ed.)

Ball, John C., y Alan Ross. The Effectiveness of Methadone Maintenance Treatment: Patients, Programs, Services, and Outcome. 1. [print.]. Springer, 1991.