Cita APA

Kolbe, L. J., Kann, L., & Collins, J. L. (1993). Overview of the Youth Risk Behavior Surveillance System.

Chicago Style Citation

Kolbe, L J., L. Kann, i J L. Collins. Overview of the Youth Risk Behavior Surveillance System. 1993.

Cita MLA

Kolbe, L J., L. Kann, i J L. Collins. Overview of the Youth Risk Behavior Surveillance System. 1993.