Dyer, W. (1981). The sky is the limit. Pocket books.
Chicago-čujuhus (17. p.)Dyer, Wayne. The Sky Is the Limit. New york: Pocket books, 1981.
MLA-čujuhus (9. p.)Dyer, Wayne. The Sky Is the Limit. Pocket books, 1981.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.