APA-referens

Covey, S. R. (1990). Seven Habits of Highly Offective People: Restoring the Charactor Ethic. Fireside.

Chicago-stil citat

Covey, Stephen R. Seven Habits of Highly Offective People: Restoring the Charactor Ethic. New York: Fireside, 1990.

MLA-referens

Covey, Stephen R. Seven Habits of Highly Offective People: Restoring the Charactor Ethic. Fireside, 1990.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.