Style de citation APA

Stephen R. Covey. (2004). The 8th habit: From effectiveness to greatness. Free Press.

Style de citation Chicago

Stephen R. Covey. The 8th Habit: From Effectiveness to Greatness. New York: Free Press, 2004.

Style de citation MLA

Stephen R. Covey. The 8th Habit: From Effectiveness to Greatness. Free Press, 2004.

Attention : ces citations peuvent ne pas être correctes à 100%.