Cita APA (7th ed.)

Gropper, G. L., & Kress, G. (1970). Managing problem behavior in the classroom: A programmed text. Meridith Corporation.

Cita Chicago (17th ed.)

Gropper, George L., i Gerard Kress. Managing Problem Behavior in the Classroom: A Programmed Text. Nueva York: Meridith Corporation, 1970.

Cita MLA (9th ed.)

Gropper, George L., i Gerard Kress. Managing Problem Behavior in the Classroom: A Programmed Text. Meridith Corporation, 1970.