Kumar, K. (1984). Reference service (4th.). Vikas.
Chicago-čujuhus (17. p.)Kumar, Krishan. Reference Service. 4th. New Delhi: Vikas, 1984.
MLA-čujuhus (9. p.)Kumar, Krishan. Reference Service. 4th. Vikas, 1984.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.