Personal Productivity with dBase III, Gorham, Kenneth, Good Book

dBASE III Plus Advanced Programming by Carrabis, Joseph David Very Good

dBase III Plus Handbook - VERY GOOD

dBASE III Plus Programmer's Library

Understanding and Using dBASE III Plus By Rob Krumm

DBASE III Plus: Microsoft Reference Guide to All Commands, Functions, and...

Using dBase III Plus by Jones, Edward Paperback

Understanding and Using dBase III Plus by Robert Krumm (1987, Trade Paperback)