APA (7th ed.) Citation

Zwier, L. J., & Hughes, A. (2003). Essential functions for conversation. Asia-Pacific Press Holdings Ltd..

Chicago Style (17th ed.) Citation

Zwier, Lawrence J., and Amy Hughes. Essential Functions for Conversation. Selangor: Asia-Pacific Press Holdings Ltd., 2003.

MLA (9th ed.) Citation

Zwier, Lawrence J., and Amy Hughes. Essential Functions for Conversation. Asia-Pacific Press Holdings Ltd., 2003.

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