Information retrieval : searching in the 21st century.

MLA

Göker, Ayse, and John Davies. Information Retrieval : Searching In the 21st Century. Chichester: Wiley, 2009.

APA

Göker, A., & Davies, J. (2009). Information retrieval : searching in the 21st century. Chichester: Wiley.

Chicago

Göker, Ayse, and John Davies. Information Retrieval: Searching In the 21st Century. Chichester: Wiley, 2009.