Consider other works by Graham Greene, such as The Third Man and The End of the Affair.
Consider other classic anti-war novels, such as Cat's Cradle by Kurt Vonnegut or The Things They Carried by Tim O'Brien.
Consider other novels about the Vietnam War, such as The Sorrow of War by Bảo Ninh.
Consider other books about colonialism, such as Wide Sargasso Sea by Jean Rhys.