APA (7th ed.) Citation

Lancaster, F. W., & Fayen, E. G. (1973). Information retrieval: On-line. Melville Pub.

Chicago Style (17th ed.) Citation

Lancaster, Frederick Wilfrid, and Emily Gallup Fayen. Information Retrieval: On-line. Los Angeles, Calif: Melville Pub, 1973.

MLA (9th ed.) Citation

Lancaster, Frederick Wilfrid, and Emily Gallup Fayen. Information Retrieval: On-line. Melville Pub, 1973.