Wooden book series has an entire book on golden ratio,
I have it in my pile :)
Quadrivium doesn't cover that in so much detail as the standalone book does, but it is possibly the best book in the series for having so many things about math in our world ranging from sacred geometry in small scale to the golden section found in the orbits of planets in our solar system, as well as many other things such as harmonics, resonance, rhythm and honestly more than I can reasonably describe.
I think what really makes the wooden books stand out is that every page in every book covers a different topic but they all tie together seamlessly, and each page has these amazing hand drawn illustrations. You really can't go wrong buying these books and at their prices I think it's a great deal. I imagine if you get Quadrivium you will be like me and immediately try to get your hands on the other wooden books, because they're criminally underpriced ^_^