APA (7th ed.) Citation

Chua, C. K., & Chan, M. J. C. (2011). Easy Mandarin 1. Rex Book Store.

Chicago Style (17th ed.) Citation

Chua, Corazon Koh, and Margareth Joy C. Chan. Easy Mandarin 1. Manila: Rex Book Store, 2011.

MLA (9th ed.) Citation

Chua, Corazon Koh, and Margareth Joy C. Chan. Easy Mandarin 1. Rex Book Store, 2011.