Gronroos Christian. (2016). Services Management and Marketing (3.). Wiley.
Chicago-čujuhus (17. p.)Gronroos Christian. Services Management and Marketing. 3. New Delhi: Wiley, 2016.
MLA-čujuhus (9. p.)Gronroos Christian. Services Management and Marketing. 3. Wiley, 2016.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.