Books like Public Speaking for Success
Dale Carnegie
Public Speaking for Success is 456 pages, about 8 hours 22 minutes at 250 words a minute.
7 books to read next
How long each takes
Talk Like TED 5.6 h 
Speaking Up Without Freaking Out 1.6 h 
What to Say When. . .You're Dying on the Platform 5.0 h 
Develop Your Presentation Skills 3.4 h 
Resonate 5.0 h 
Effective Presentation Skills 1.3 h 
Say It in Six 2.8 h Bar height shows length. Estimated at 250 words a minute.