Listmania!
Stuff I was forced to read for History
A Concise History of the Spanish Civil WarA Concise History of the Spanish Civil War by Paul Preston
Buy used from: £49.85
Very left-wing but great for understanding the positions of foreign countries during the Civil War
The Spanish Civil WarThe Spanish Civil War by Hugh Thomas
Buy new: £13.35 / Used from: £7.99
So long! But that just makes it more detailed. Don't use it as a preliminary read for the War but if you need specifics, especially statistics it's really useful
Spain, 1808-1975 (Oxford History of Modern Europe)Spain, 1808-1975 (Oxford History of Modern Europe) by Raymond Carr
Buy new: £50.35 / Used from: £32.40
Only has a limited section on the Civil War, but good if you want the complete picture such as the period before and afterwards
Franco and the Spanish Civil War (Introductions to History)Franco and the Spanish Civil War (Introductions to History) by Filipe Ribeiro de Meneses
Buy new: £16.59 / Used from: £6.98
The best book to work with - easy to understand, gives a good picture of events, goes into reasonable depth - definitely recommended. Plus its a bargain!!
The Spanish Civil War (Questions and Analysis in History)The Spanish Civil War (Questions and Analysis in History) by Andrew Forrest
Buy new: £12.99 / Used from: £7.49
Good as also gives separate sources as well as narrative, especially useful for the Republican point of view