APA (7th ed.) Citation

Ellis, D. (1996). Progress and problems in information retrieval (2nd ed.). Library Association.

Chicago Style (17th ed.) Citation

Ellis, David. Progress and Problems in Information Retrieval. 2nd ed. London: Library Association, 1996.

MLA (9th ed.) Citation

Ellis, David. Progress and Problems in Information Retrieval. 2nd ed. Library Association, 1996.

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