APA (7th ed.) Citation

Nicholas, D., Harris, K., & Erbach, G. (1987). Online searching: Its impact on information users. Mansell Pub..

Chicago Style (17th ed.) Citation

Nicholas, David, Kevin Harris, and Gertrud Erbach. Online Searching: Its Impact on Information Users. London: Mansell Pub., 1987.

MLA (9th ed.) Citation

Nicholas, David, et al. Online Searching: Its Impact on Information Users. Mansell Pub., 1987.