Gyöngyi, Zoltan; Garcia-Molina, Hector (). „Web spam taxonomy”(PDF). Proceedings of the First International Workshop on Adversarial Information Retrieval on the Web (AIRWeb), 2005 in The 14th International World Wide Web Conference (WWW 2005) May 10, (Tue) – 14 (Sat), 2005, Nippon Convention Center (Makuhari Messe), Chiba, Japan(PDF)|format= necesită |url= (ajutor). New York, NY: ACM Press. ISBN1-59593-046-9.
