APA ציטוט

Covey, S. R. The 7 habits of highly effective people: Restoring the character ethic (Revised edition.).

Chicago Style (17th ed.) Citation

Covey, Stephen R. The 7 Habits of Highly Effective People: Restoring the Character Ethic. Revised edition.

ציטוט MLA

Covey, Stephen R. The 7 Habits of Highly Effective People: Restoring the Character Ethic. Revised edition.