Books like The Science of the Spoken Word
Mark Prophet, Mark L. Prophet, Elizabeth Clare Prophet
The Science of the Spoken Word is 218 pages, about 4 hours at 250 words a minute.
6 books to read next
How long each takes
The Law of Attraction 4.1 h 
Money, and the Law of Attraction 4.6 h 
The Amazing Power of Deliberate Intent 5.5 h 
Opening to Channel 4.1 h 
Magic, Witchcraft, and Religion 8.7 h 
The Magical Approach 3.2 h Bar height shows length. Estimated at 250 words a minute.