Gaya APA

Kowasakl, G, , K, G, ., Croft, B. (1997). Information Retrieval Systems , Theori and Implementasi . Boston : Kluwer Acdemic Publishers.

Gaya MLA

Kowasakl, Gerald, , Kowasakli, Gerald, ., Croft, Bruce. "Information Retrieval Systems , Theori and Implementasi". Boston : Kluwer Acdemic Publishers, 1997. Buku.