Cita APA

Sparck Jones, K. (1971). Automatic keyword classification for information retrieval. Butterworths.

Citación estilo Chicago

Sparck Jones, Karen. Automatic Keyword Classification for Information Retrieval. London: Butterworths, 1971.

Cita MLA

Sparck Jones, Karen. Automatic Keyword Classification for Information Retrieval. Butterworths, 1971.

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