Just read "Worshiping Your Wife" by Mark Remond. Not chastity per se but he does emphasis that the control of sex should be by the wife. I found the book to be a very good training manual for someone who wants to improve their relationship with the wife. The book is about how to worship her by giving her control of sex, doing things for her such as pampering, housework, etc. I liked it but found the author to use lots of big words to get across a simple point, a pampered wife who is not worn out by housework who is not constantly pressured for sex will be happier and more open to sex when she knows she can have sex when and how she wants it, not when and how the husband wants it. I would recommend the book to some one who is new to femdom, someone who wants a femdom relationship but more vanilla than BDSM. The only drawback is the author is not into chastity per se, he calls is "Tease and Ration" sex, not tease and denial.