A Manual of Abhidhamma by Narada Maha Thera l
A Comprehensive Manual of Abhidhamma by Bhikkhu Bodhi
An Introduction to Theravada Abhidhamma by Sumanapala Galmangoda
Early Buddhist Teachings and The Abhidhamma Interpretations by Sumanapala Galmangoda
Abhidhamma for the beginner by Egerton C Baptist
Notes for YMBA Junior by Mangala Vihara Buddhist Temple