woodruffe, H. (1997). Services marketing. Macmillan.
Chicago-čujuhus (17. p.)woodruffe, Helen. Services Marketing. Delhi: Macmillan, 1997.
MLA-čujuhus (9. p.)woodruffe, Helen. Services Marketing. Macmillan, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.