Cita APA (7a ed.)

Shontz, F. C., & Spotts, J. V. (1980). Cocaline users: A representative case approach. Free Pr. [u.a.].

Cita Chicago Style (17a ed.)

Shontz, Franklin C., y James V. Spotts. Cocaline Users: A Representative Case Approach. New York [u.a.]: Free Pr. [u.a.], 1980.

Cita MLA (9a ed.)

Shontz, Franklin C., y James V. Spotts. Cocaline Users: A Representative Case Approach. Free Pr. [u.a.], 1980.