By Edward K. Conklin, Elizabeth D. Rather; FORTH, Inc., 1998, ISBN 0966215605. For experienced programmers new to Forth, and a fine detailed, technical ANS Forth reference for experienced Forth programmers. [FORTH, Inc.]
By Elizabeth D. Rather, et al.; FORTH, Inc., 2000, ISBN 0966215613. Introductory spiral bound workbook, simple but detailed tutorial on modern Forth, long used as training manual at Forth, Inc. [FORTH, Inc.]
By Dr. C.H. Ting; Offete Enterprises, 1993. Table of contents, and chapter one; compares Forth and Zen while giving overview of Forth from start to end. [Offete Enterprises]
