Cita APA (7a ed.)

Pollard, J. A. (1999). Measuring risk and protective factors for substance abuse, delinquency, and other problem behaviors in adolescent populations. [s.n.].

Cita Chicago Style (17a ed.)

Pollard, John A. Measuring Risk and Protective Factors for Substance Abuse, Delinquency, and Other Problem Behaviors in Adolescent Populations. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Pollard, John A. Measuring Risk and Protective Factors for Substance Abuse, Delinquency, and Other Problem Behaviors in Adolescent Populations. [s.n.], 1999.