Covey, S. R. (1997). THE 7 HABITS OF HIGHLY EFECTIVE PEOPLE (7 KEBIASAAN MANUSIA YANG SANGAT EFEKTIF). Binarupa Aksara.
Chicago Style (17th ed.) CitationCovey, Stephen R. THE 7 HABITS OF HIGHLY EFECTIVE PEOPLE (7 KEBIASAAN MANUSIA YANG SANGAT EFEKTIF). Binarupa Aksara, 1997.
MLA (8th ed.) CitationCovey, Stephen R. THE 7 HABITS OF HIGHLY EFECTIVE PEOPLE (7 KEBIASAAN MANUSIA YANG SANGAT EFEKTIF). Binarupa Aksara, 1997.
Warning: These citations may not always be 100% accurate.