Cita APA (7th ed.)

Johnson, D. W., & Johnson, R. T. (1989). Leading the cooperative school. Interaction Book Co.

Cita Chicago (17th ed.)

Johnson, David W., i Roger T. Johnson. Leading the Cooperative School. Edina, Minn: Interaction Book Co, 1989.

Cita MLA (9th ed.)

Johnson, David W., i Roger T. Johnson. Leading the Cooperative School. Interaction Book Co, 1989.