APA (7th ed.) Citation

Chang, E. C. (2001). Easy Chinese tutor: Level I : mandarin version. Emnes Systems.

Chicago Style (17th ed.) Citation

Chang, Edward C. Easy Chinese Tutor: Level I : Mandarin Version. [S.l.]: Emnes Systems, 2001.

MLA (9th ed.) Citation

Chang, Edward C. Easy Chinese Tutor: Level I : Mandarin Version. Emnes Systems, 2001.