Ziglar, Z. (2011). Better than Good. Jaico.
Chicago-čujuhus (17. p.)Ziglar, Zig. Better than Good. Jaico, 2011.
MLA-čujuhus (9. p.)Ziglar, Zig. Better than Good. Jaico, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.