Gaya APA

Seng, B, H., Keng, O, L. (2002). I Know my Hanyu Pinyin . Singapore: Times Privat Media Limited.

Gaya MLA

Seng, Boon, Hui., Keng, Ong, Lay. "I Know my Hanyu Pinyin". Singapore: Times Privat Media Limited, 2002. Text.