Henry, W. M. (1980). Online searching: An introduction. Butterworths.
芝加哥风格引文Henry, W. M. Online Searching: An Introduction. London ; Boston: Butterworths, 1980.
MLA引文Henry, W. M. Online Searching: An Introduction. Butterworths, 1980.
警告：这些引文格式不一定是100％准确.