Here’s a link to an excellent review of In Their Own Hands: How Savings Groups are Revolutionizing Development, by Jeffrey Ashe and Kyla Jagger Neilan - just published in the Enterprise Development and Microfinance journal. It begins:

The spread and success of savings groups may not be news for
financial inclusion and enterprise development practitioners.
However, in their recent book – In Their Own Hands: How Savings
Groups are Revolutionizing Development – microfinance and savings
group pioneer Jeffrey Ashe and colleague Kyla Jagger Neilan inspire us with the vision, the history, the statistics, and the stories of savings groups, a simple mechanism that is catalysing poverty reduction for millions worldwide.  

Does the review make you want to read the book? 

Good! You can get it here.