This one's pretty simple.
What are your Big 5 books on marriage?
Go!
SIDE NOTES: 1. If you haven't yet, go back and comment on older Big 5 books posts. 2. If you are interested in the books on my Big 5 lists, go to the Reformissionary bookstore and add it to your Amazon purchase. It helps the Reformissionary to pay the bills. Most appreciated.