APA (7th ed.) Citation

Henry, W. M. (1980). Online searching: An introduction. Butterworths.

Chicago Style (17th ed.) Citation

Henry, W. M. Online Searching: An Introduction. London Boston: Butterworths, 1980.

MLA (9th ed.) Citation

Henry, W. M. Online Searching: An Introduction. Butterworths, 1980.

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