APA (7th ed.) Citation

Walker, S., & Jones, R. M. Improving subject retrieval in online catalogues.

Chicago Style (17th ed.) Citation

Walker, Stephen, and Richard M. Jones. Improving Subject Retrieval in Online Catalogues. [London].

MLA (9th ed.) Citation

Walker, Stephen, and Richard M. Jones. Improving Subject Retrieval in Online Catalogues.

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