W.H, W. (2002). Basic English Grammar. Putra Pelajar.
Chicago Style (17th ed.) CitationW.H, WIWIK. Basic English Grammar. Putra Pelajar, 2002.
MLA (8th ed.) CitationW.H, WIWIK. Basic English Grammar. Putra Pelajar, 2002.
Warning: These citations may not always be 100% accurate.