Alfred's Basic Piano Library Theory Book: Level 2 by Willard Palmer (1982-04-30)
Alfred's Premier Piano Course: Theory 2A by Dennis Alexander (12-Dec-2005) Paperback
Theory & Technic for the Young Beginner Primer B by James Bastien (1987) Paperback
Adult Piano Adventures - All-in-One Piano Course Book 1 | Faber Piano Course for Adult Beginners | Spiral Bound with Online Media and Instructional Videos | Includes Lesson, Technique and Theory
Accomplished Piano Method: Book 1: Ideal for School Exam Preparation. Play fun piano pieces, use tutorial videos, learn theory and prepare for performances.
The Chord Wheel: The Ultimate Tool for All Musicians | Music Theory Learning Tool for Guitar Piano and All Instruments | Visual Guide to Chord Progressions and Key Changes