AZAR, B. S. Understanding and using english grammar edisi dwibahasa Inggris-Indonesia. Binarupa Aksara.
Chicago Style (17th ed.) CitationAZAR, BETTY SCHAMPTER. Understanding and Using English Grammar Edisi Dwibahasa Inggris-Indonesia. Binarupa Aksara.
MLA (8th ed.) CitationAZAR, BETTY SCHAMPTER. Understanding and Using English Grammar Edisi Dwibahasa Inggris-Indonesia. Binarupa Aksara.
Warning: These citations may not always be 100% accurate.