MacGregor, S. (2007). Students Steps to Success 7 langkah menuju sukses Sandy MacGregor. Hikmah.
Chicago Style (17th ed.) CitationMacGregor, Sandy. Students Steps to Success 7 Langkah Menuju Sukses Sandy MacGregor. Hikmah, 2007.
MLA (8th ed.) CitationMacGregor, Sandy. Students Steps to Success 7 Langkah Menuju Sukses Sandy MacGregor. Hikmah, 2007.
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