APA (7th ed.) Citation

Hjerppe, R., & Olander, B. (1989). Cataloging and Expert Systems: AACR2 as a Knowledge Base.

Chicago Style (17th ed.) Citation

Hjerppe, Roland, and Birgitta Olander. Cataloging and Expert Systems: AACR2 as a Knowledge Base. 1989.

MLA (9th ed.) Citation

Hjerppe, Roland, and Birgitta Olander. Cataloging and Expert Systems: AACR2 as a Knowledge Base. 1989.

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