Cita APA (7a ed.)

El-Guebaly, N. (1999). Methodological and clinical challenges in evaluating treatment outcome of substance-related disorders and comorbidity. [s.n.].

Cita Chicago Style (17a ed.)

El-Guebaly, N. Methodological and Clinical Challenges in Evaluating Treatment Outcome of Substance-related Disorders and Comorbidity. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

El-Guebaly, N. Methodological and Clinical Challenges in Evaluating Treatment Outcome of Substance-related Disorders and Comorbidity. [s.n.], 1999.

Precaución: Estas citas no son 100% exactas.