MARDEN ORISON SWETT. (1961). CONQUEST OF WORRY. ORIENT PUBLISHING COMPANY.
Chicago-čujuhus (17. p.)MARDEN ORISON SWETT. CONQUEST OF WORRY. DELHI: ORIENT PUBLISHING COMPANY, 1961.
MLA-čujuhus (9. p.)MARDEN ORISON SWETT. CONQUEST OF WORRY. ORIENT PUBLISHING COMPANY, 1961.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.