APA Edition Citation

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

Chicago Edition Citation

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

MLA Edition Citation

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

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