This article is from the Amiga Books FAQ, by Marc Atkin with numerous contributions by others.
o Commodore-Amiga, Inc.: The AmigaDOS Manual (3rd edition) Bantam, 1991. ISBN 0-553-35403-5 $24.95, CAN 31.95, UKP 21.99
see section 1.1: "Programmer's 'Must haves'"
o Sheldon Leemon: AmigaDOS Reference Guide (4th edition) Compute, 1992. ISBN 0-87455-268-0 $22.95, UKP 20.95
firstname.lastname@example.org (Paul Toyne), 9 Feb 1994: "...it is excellent, it covers all forms of pattern matching, the basics of DOS and then lists each command with complete description. It covers 1.x ,2.x and 3.x."
o [author?]: Mastering Amiga DOS, Volumes 1, 2, and 3 Bruce Smith Books, [year?]. ISBN 1-873308-18-3 UKP 21.95
anonymous, 11 Feb 1994: "I just bought vol 1 and I wouldn't recommend it it's too basic and incorrect in spots. And when he gets to an interesting part, he says it's in vol 2."