Here is a review of the book:

https://muse.jhu.edu/article/732142

• Power Broking in the Shade: Party Finances and Money Politics in Southeast Asia by Wolfgang Sachsenröder (review)
• Risa J. Toha
• Contemporary Southeast Asia: A Journal of International and Strategic Affairs
• ISEAS–Yusof Ishak Institute
• Volume 41, Number 2, August 2019
• pp. 320-322
• Review