Hume, G. (1997). Manual of commercial correspondance. A.H.Wheeler.
Chicago-čujuhus (17. p.)Hume, G. Manual of Commercial Correspondance. New Delhi: A.H.Wheeler, 1997.
MLA-čujuhus (9. p.)Hume, G. Manual of Commercial Correspondance. A.H.Wheeler, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.