Kushan
35 Reads
 The Art of Happiness
| 1998 | 60 reads | 3.96 | 322 pages? duration | |
 The Now Habit
| 1988 | 36 reads | 3.71 | 206 pages? duration | |
 Thinking in systems : a primer
| 2008 | 93 reads | 4.13 | 218 pages? duration | |
 Sources of Power: How People Make Decisions
| 1998 | 3 reads | 3 | 372 pages? duration | |
 Where Good Ideas Come from: The Natural History of Innovation
| 2010 | 40 reads | 3.53 | 326 pages? duration |