Zeithami, V. &. O. (2012). Service marketing (5 th.).
Chicago-čujuhus (17. p.)Zeithami, Valarie & Others. Service Marketing. 5 th. Delhi, 2012.
MLA-čujuhus (9. p.)Zeithami, Valarie & Others. Service Marketing. 5 th. 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.