APA (7e ed.) Bronvermelding

Guerra, N. G., & Bradshaw, C. P. (2008). Core competencies to prevent problem behaviors and promote positive youth development. Wiley Periodicals.

Chicago (17e ed.) Bronvermelding

Guerra, Nancy G., en Catherine P. Bradshaw. Core Competencies to Prevent Problem Behaviors and Promote Positive Youth Development. San Francisco: Wiley Periodicals, 2008.

MLA (9e ed.) Bronvermelding

Guerra, Nancy G., en Catherine P. Bradshaw. Core Competencies to Prevent Problem Behaviors and Promote Positive Youth Development. Wiley Periodicals, 2008.