Zyman, S. (1999). The end of marketing as we know it (Paperback edition.). Harper Collins.
Lua i Stíl Chicago (17ú heag.)Zyman, Sergio. The End of Marketing as We Know It. Paperback edition. New York: Harper Collins, 1999.
Lua MLA (9ú heag.)Zyman, Sergio. The End of Marketing as We Know It. Paperback edition. Harper Collins, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.