G, R. Belajar Cepat Microsoft Excel 2007. Andi.
Chicago Style (17th ed.) CitationG, RETNA. Belajar Cepat Microsoft Excel 2007. Andi.
MLA (8th ed.) CitationG, RETNA. Belajar Cepat Microsoft Excel 2007. Andi.
Warning: These citations may not always be 100% accurate.