What is the author's style in Life in a Medieval City by Frances Gies?

The authors, Joseph and Frances Gies, are self-described "amateur historians." Perhaps appropriately, the historical account presented is not particularly dense, detailed, or revelatory. Here is an account of mostly common knowledge about the High Middle Ages, at the level of a primer or introduction of a broad range of topics. The reader, enticed by a particular subject, may then want to explore the subject in greater detail in a more traditional history book with a more narrow focus.