Covey, S. R. (2005). The 8th HABIT: Melampaui Efektivitas, Menggapai Keagungan. Gramedia.
Chicago Style (17th ed.) CitationCovey, Stephen R. The 8th HABIT: Melampaui Efektivitas, Menggapai Keagungan. Gramedia, 2005.
MLA (8th ed.) CitationCovey, Stephen R. The 8th HABIT: Melampaui Efektivitas, Menggapai Keagungan. Gramedia, 2005.
Warning: These citations may not always be 100% accurate.