APA (7th ed.) Citation

Richards, J., & Simkins, E. (2020). Materials. Gareth Stevens Publishing.

Chicago Style (17th ed.) Citation

Richards, Jon, and Ed Simkins. Materials. New York, NY: Gareth Stevens Publishing, 2020.

MLA (8th ed.) Citation

Richards, Jon, and Ed Simkins. Materials. Gareth Stevens Publishing, 2020.

Warning: These citations may not always be 100% accurate.