A Pocket Full of Information, Arbitron Television, New York, April 1980.
Standard Definitions of Broadcast Research Terms, by Dr. Gerald J. Glasser, National Association of Broadcasters, Washington, D.C., 1970. This is the authority, covering 200 terms and concepts.
Terms to Keep You on the Right Road, Arbitron Radio, New York, November 1981.
Understanding Broadcast Ratings, Broadcast (now Electronic Media) Rating Council, New York, 1981.
Poltrack David F. Television Marketing: Network/Local/Cable. New York: McGraw-Hill, 1983. Excellent treatment of basic ratings arithmetic appears in Chapter 2.