Software Quality Engineering: Testing, Quality Assurance, and Quantifiable Improvement.
This text offers a comprehensive and integrated approach to software quality engineering. By following the author's clear guidance, readers learn how to master the techniques to produce high-quality, reliable software, regardless of the software system's level of complexity.

JUnit Pocket Guide.
While there are lots of bits of documentation all over the place, there isn't a go-to-manual that serves as a quick reference for JUnit. This Pocket Guide meets the need, bringing together all the bits of hard to remember information, syntax, and rules for working with JUnit, as well as delivering the insight and sage advice that can only come from a technology's creator.

Pragmatic Unit Testing In Java with Junit.
Improve your Java coding skills using unit testing: it's really all about coding, not testing. This book shows not just how to test, but what to test. Discover the tricky hiding places where bugs breed, and how to catch them using JUnit. You don't need to adopt Extreme Programming, or Test-Driven Development in order to reap the proven benefits of unit testing, the pragmatic way. Volume II of the Pragmatic Starter Kit.

Nunit Pocket Reference.

JUnit: The Definitive Guide.

Junit in Action.

Testing Applications on the Web, 2nd Edition.

 ** Includes updates to material on testing Web applications.
 ** Contains new coverage of testing for wireless applications.
 ** From the coauthor of the bestselling testing book of all time.
 ** Each test type is backed up with a testing example and error examples

Unit Testing in Java.

 *Shows how the discovery and avoidance of software errors is a demanding and creative activity in its own right and can build confidence early in a project.
 *Demonstrates how automated tests can detect the unwanted effects of small changes in code within the entire system.
 *Discusses how testing works with persistency, concurrency, distribution, and web applications.
 *Includes a discussion of testing with C++ and Smalltalk.

Beta Testing for Better Software.
Implement, operate, and use beta testing immediately with this hands-on guide to the best practices

How to Break Software:A practical guide to testing..
How to Break Software takes a very applied and non-rigid approach to teaching how to test software for common bugs. It is a departure from conventional testing in which testers prepare a written test plan and then use it as a script when testing the software. Instead of relying on a rigid plan, it should be intelligence, insight, experience and a “nose for where the bugs are hiding” that guide testers. This book helps testers develop this insight.

The techniques presented in this book not only allow testers to go off-script, they encourage them to do so. Don't blindly follow a document that may be out of date and that was written before the product was even testable. Instead, use your head! Open your eyes! Think a little, test a little and then think a little more.