Cita APA (7th ed.)

Pro-Ed (Firm) & Hammill Institute on Disabilities. (1999). Journal of positive behavior interventions. Pro-Ed.

Cita Chicago (17th ed.)

Pro-Ed (Firm) i Hammill Institute on Disabilities. Journal of Positive Behavior Interventions. Austin, TX: Pro-Ed, 1999.

Cita MLA (9th ed.)

Pro-Ed (Firm) i Hammill Institute on Disabilities. Journal of Positive Behavior Interventions. Pro-Ed, 1999.