APA (7th ed.) Citation

Andrew, R., & Simmons, J. (2017). The new CSS layout. A Book Apart.

Chicago Style (17th ed.) Citation

Andrew, Rachel, and Jen Simmons. The New CSS Layout. New York: A Book Apart, 2017.

MLA (9th ed.) Citation

Andrew, Rachel, and Jen Simmons. The New CSS Layout. A Book Apart, 2017.