- eBookHow to be Happy - Happiness HacksJ. A. Powell
- eBookHow to Study Effectively - FAST, EFFICIENT, EXAM-READYJ. A. Powell
- eBookHow to be Happy - at School, at WorkJ. A. Powell
- eBookSerien: Nuggets of KnowledgeH. Warren Browne
- eBookSerien: How to Be HappyB. R. Amritaanshu Saroj
- eBookHow to be Happy - Now and in the FutureJ. A. Powell
- eBookHow To Be Happy - BOOKS 1 - 3J. A. Powell