APA (7th ed.) Citation

Essa, E. (2007). What to do when: Practical guidance strategies for challenging behaviors (6th ed.). Thomson/Delmar Learning.

Chicago Style (17th ed.) Citation

Essa, Eva. What to Do When: Practical Guidance Strategies for Challenging Behaviors. 6th ed. Clifton Park, N.Y: Thomson/Delmar Learning, 2007.

MLA (9th ed.) Citation

Essa, Eva. What to Do When: Practical Guidance Strategies for Challenging Behaviors. 6th ed. Thomson/Delmar Learning, 2007.