APA-čujuhus (7. p.)
Covey, S. R. (1991). Principle-centered leadership. Pocket books.
Chicago-čujuhus (17. p.)
Covey, Stephen R. Principle-centered Leadership. London: Pocket books, 1991.
MLA-čujuhus (9. p.)
Covey, Stephen R. Principle-centered Leadership. Pocket books, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.