APA (7th ed.) Citation

Olivia Liau Ching Mei. (2002). Improve your english though vocabulary: Prictice. System Publishing House Pte Lte.

Chicago Style (17th ed.) Citation

Olivia Liau Ching Mei. Improve Your English Though Vocabulary: Prictice. Singapore: System Publishing House Pte Lte, 2002.

MLA (9th ed.) Citation

Olivia Liau Ching Mei. Improve Your English Though Vocabulary: Prictice. System Publishing House Pte Lte, 2002.

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