Citace podle APA (7th ed.)

COVEY, S. R. (1990). The 7 habits of higly effective people: Powerful lessonin personal change. A Fireside Book.

Citace podle Chicago (17th ed.)

COVEY, Stephen R. The 7 Habits of Higly Effective People: Powerful Lessonin Personal Change. New York: A Fireside Book, 1990.

Citace podle MLA (9th ed.)

COVEY, Stephen R. The 7 Habits of Higly Effective People: Powerful Lessonin Personal Change. A Fireside Book, 1990.

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