Gaya APA

Kam, C, A., Kam, K, H. (1992). Longman dictionary of grammar and usage . Longman Singapore Publishers: Longman Singapore Publishers.

Gaya MLA

Kam, Chuan, Aik., Kam, Kai, Hui. "Longman dictionary of grammar and usage". Longman Singapore Publishers: Longman Singapore Publishers, 1992. Text.