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引文Covey, Stephen R. THE 7 HABITS OF HIGHLY EFECTIVE PEOPLE (7 KEBIASAAN MANUSIA YANG SANGAT EFEKTIF). Binarupa Aksara, 1997.
警告:这些引文格式不一定是100%准确.