If your local library has it great! However, it probably doesn't but you should be able to get it via interlibrary loan. I would assume you can access your local library's website and from there search WorldCat for the book and make the request.
If your library system is like ours, it will take about 4-6 weeks for the book to arrive at which point your local library will contact you to let you know it has arrived. Once you get the book, if you need extra time to finish it, just go to the local library's website and check it out for a few more weeks.
I can access the library website, but I don’t know how to run an interlibrary loan request from there. I can just take the information and ask next time I’m there.