What is the author's style in The Power and the Glory by Graham Greene?

Greene is British so writes in British English which is slightly different then American English. This mostly results in a few words spelled differently. The novel was first published in 1940 which means the language is also a little antiquated. As the story takes place in Mexico there are a few Spanish words used but it is not at all necessary to speak Spanish to understand their meaning as it is clear from the context of their use. There is a lot of dialogue in the story and well as the internal thoughts of the characters. The language flows very easily and the story moves quickly.