Used iPhone 6 Plus to purchase an audiobook but can't find it

Purchased my first Audiobook using the iTunes store, but can't seem to figure out how to play the file on my iPhone. I thought perhaps I'd made a mistake, but when I try and purchase it again, it warns me that I am about to buy a second copy. So, when I launch the Music app, click "...More" I don't see Audiobooks listed here. When I click Edit, I don't see Audiobooks listed with an icon.

All I want to do is listen to the book I just bought, but don't know how to find it. There is no such thing as 'purchased' for audiobooks. So where is it? how do I confirm I bought it?