Covey, S. R. (2004). The 7 Habits of Highly Effective People. Pocket Books.
Chicago-čujuhus (17. p.)Covey, Stephen R. The 7 Habits of Highly Effective People. Pocket Books, 2004.
MLA-čujuhus (9. p.)Covey, Stephen R. The 7 Habits of Highly Effective People. Pocket Books, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.