APA (7th ed.) Citation

(1986). Online information retrieval: Concepts, principles, and techniques / Stephen P. Harter.

Chicago Style (17th ed.) Citation

Online Information Retrieval: Concepts, Principles, and Techniques / Stephen P. Harter. 1986.

MLA (9th ed.) Citation

Online Information Retrieval: Concepts, Principles, and Techniques / Stephen P. Harter. 1986.

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