7 links
Programming Ruby: The Pragmatic Programmer's Guide
amazon.com
Descriptions, reviews, purchase source. [Amazon.com]
Ruby Developer's Guide
amazon.com
By Robert Feldt, Lyle Johnson, Michael Neumann; Syngress Media Inc., 2002, ISBN 1928994644. By programmers; comprehensive, discusses Ruby's role in many real-world applications. [A…
Sams Teach Yourself Ruby in 21 Days
isbn.nu
By Mark Slagell. Book price comparing various online bookstores.
The Ruby Way
amazon.com
By Mark Slagell; Sams Publishing, 2001, ISBN 0672320835. Assumes reader knows programming, by teacher and programmer, Uses code samples to focus on how to use Ruby for specific app…
Why's (Poignant) Guide to Ruby
poignantguide.net
An online Ruby book for beginning coders which reads like an illustrated novel.