Παραπομπή σε μορφή APA (7η εκδ.)

Essa, E. (1999). A practical guide to solving preschool behavior problems (4th ed.). Delmar.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Essa, Eva. A Practical Guide to Solving Preschool Behavior Problems. 4th ed. Albany: Delmar, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Essa, Eva. A Practical Guide to Solving Preschool Behavior Problems. 4th ed. Delmar, 1999.