Gaya APA

Aik, K, C., Hui, K, K. (1999). Longman dictionaries of grammar and usage (New.Ed.). Singapore: Addison Wesley Longman.

Gaya MLA

Aik, Kam, Chuan., Hui, Kam, Kai. "Longman dictionaries of grammar and usage". New.Ed. Singapore: Addison Wesley Longman, 1999. Text.