The Perigee Visual Dictionary of Signing: Revised & Expanded Third Edition, Paperback/Rod R. Butterworth

The Pocket Dictionary of Signing - Rod R. Butterworth

Signing Made Easy: A Complete Program for Learning Sign Language. Includes Sentence Drills and Exercises for Increased Comprehension and - Rod R. Butterworth

That We May Be One, Paperback/Rod R. Butterworth