This article lists seventy-eight reference sources, and is divided into the following four sections: (1) Useful But Little-Known Reference Tools by John Fetros, (2) The Statesman's Year-Book by James Becker, (3) Single Volume Scientific Encyclopedias by Jack Clarke and (4) Ten Basic Sources of Business and Economic Statistics by James Woy. (MF)

In this study quantifiable characteristics of encyclopedia articles such as subjects treated, length, illustrations and bibliographies were examined. Random subsamples were analyzed and the findings are presented in twelve tables. (1 reference) (DH)