APA (7th ed.) Citation

Leon, R. (1994). Information retrieval: New systems and current research ; Glasgow, 1993. Taylor Graham.

Chicago Style (17th ed.) Citation

Leon, Ruben. Information Retrieval: New Systems and Current Research ; Glasgow, 1993. London <<[u.a.]>>: Taylor Graham, 1994.

MLA (9th ed.) Citation

Leon, Ruben. Information Retrieval: New Systems and Current Research ; Glasgow, 1993. Taylor Graham, 1994.

Warning: These citations may not always be 100% accurate.