APA (7th ed.) Citation

(2019). Information Retrieval: An Introduction. Geogetown University.

Chicago Style (17th ed.) Citation

Information Retrieval: An Introduction. Canada: Geogetown University, 2019.

MLA (9th ed.) Citation

Information Retrieval: An Introduction. Geogetown University, 2019.

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