Godin, S. (1999). Permission Marketing. Broadway books Publishing.
Chicago-čujuhus (17. p.)Godin, Seth. Permission Marketing. USA: Broadway books Publishing, 1999.
MLA-čujuhus (9. p.)Godin, Seth. Permission Marketing. Broadway books Publishing, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.