Books like The City Who Fought
Anne McCaffrey, S. M. Stirling
The City Who Fought is 436 pages, about 8 hours at 250 words a minute.
12 books to read next
How long each takes
Old Man’s War 5.7 h 
The Last Colony 5.9 h 
The Ghost Brigades 5.9 h 
Shadows in Flight 4.1 h 
When Worlds Collide 6.3 h 
Absolution Gap 12.3 h 
Trading in Danger 5.4 h 
First Lensman 5.6 h 
Between Planets 4.1 h 
Star Trek - Log Five 3.6 h 
Space Viking 3.9 h 
Deliverer 6.6 h Bar height shows length. Estimated at 250 words a minute.