Παραπομπή σε μορφή APA (7η εκδ.)

Gartrell, D., & Gartrell, D. ß. G. a. t. d. (1997). A guidance approach for the encouraging classroom (2nd ed.). Delmar Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gartrell, Daniel, και Daniel. ßt Guidance approach to discipline Gartrell. A Guidance Approach for the Encouraging Classroom. 2nd ed. Albany, N.Y: Delmar Publishers, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gartrell, Daniel, και Daniel. ßt Guidance approach to discipline Gartrell. A Guidance Approach for the Encouraging Classroom. 2nd ed. Delmar Publishers, 1997.