Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.