Lulu is having a special deal. Through 15 October, get 25% off all print books with code EATYOUREGGS. Below are some Lulu books you might want. I’m sure there’s a lot more, because the CMAA also sells their books through Lulu.
Note: This deal only applies to Lulu books. Many liturgical books are sold on Lulu.
Many books by composer Kevin Allen (link) are also sold by Lulu.