Singh, R. (1996). Service: Heart of hospitality. Shipra.
Chicago-čujuhus (17. p.)Singh, R. Service: Heart of Hospitality. Delhi: Shipra, 1996.
MLA-čujuhus (9. p.)Singh, R. Service: Heart of Hospitality. Shipra, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.