Books like Akar Tasawuf Di Indonesia
Alwi Shihab
Akar Tasawuf Di Indonesia is 343 pages, about 6 hours 17 minutes at 250 words a minute.
8 books to read next
How long each takes
The Conclusive Argument from God = 11.4 h Sejarah Peradaban Islam Indonesia 6.1 h 
The Mysticism of Sound and Music 5.9 h 
The Sufis 7.4 h 
Saints and Somalis 3.2 h 
The Bezels of Wisdom 4.3 h 
The Revival of the Religious Sciences 3.4 h 
Sufism 2.6 h Bar height shows length. Estimated at 250 words a minute.