APA (7th ed.) Citation

Westby, C. E. (2017). Play & language: The roots of literacy. PESI Inc..

Chicago Style (17th ed.) Citation

Westby, Carol E. Play & Language: The Roots of Literacy. Eau Claire, WI: PESI Inc., 2017.

MLA (9th ed.) Citation

Westby, Carol E. Play & Language: The Roots of Literacy. PESI Inc., 2017.