- Alfred's Essentials of Music Theory Complete (Books 1-3)
- Alfred's Essentials of Music Theory - A Complete Self-Study Course for All Musicians
- Essentials of Music Theory, Book 1 (Essentials of Music Theory)
- Essentials of Music Theory, Book 2
- Alfred's Essentials of Music Theory : Complete: Lessons, Ear Training, Workbook
- Douglas Southall Freeman
- Jim Lehrer
- George Mann
- John P. Marquand
- Sax Rohmer
- Elizabeth Drew
- Will Peterson
- Rita Carter
- Katherine Marsh
- Willard A. Palmer
- Jack O'Connell
- Barrie Carson Turner
- Scott Mebus
- John Denis
- Robert Service
- Al Shenk
- Carolynn A. Lindeman
- Patricia Hackett
- Alan Billingsley
- R.M. Sainsbury