Okay, this is the kind of little detective work I actually enjoy — the title 'Austin' could point to a few different things, so I'll walk you through what I would do and what to watch out for.
First, check the book itself: the title page (not the cover) almost always lists the author and the publication information. The copyright page will show the publication year and publisher, sometimes even the print run. If you only have a photo of the cover, snap a clear shot of the spine and back cover too — those often have the ISBN or an imprint logo. With the ISBN in hand you can find the exact edition in seconds via Google Books, WorldCat, or an ISBN lookup site.
If you don’t have the physical book, try searching library catalogs (WorldCat or your local library), Goodreads, or Google Books with the exact phrase 'Austin' in quotes. Be aware of common confusions: people sometimes type 'Austin' when they mean 'Austen' — as in Jane Austen — who wrote 'Pride and Prejudice' and 'Emma' in the early 19th century. Also, 'Austin' could be a travel guide, a local history, or a contemporary novel; context (cover art, genre tag, or publisher) helps narrow it fast. If you want, tell me any extra detail you have — cover color, subtitle, or even a line of text — and I’ll help chase it down.