Cita APA

Covey, S. R. (1991). Principle-centered leadership. Pocket books.

Citación estilo Chicago

Covey, Stephen R. Principle-centered Leadership. London: Pocket books, 1991.

Cita MLA

Covey, Stephen R. Principle-centered Leadership. Pocket books, 1991.

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