I've never seen backing yardage printed in a book.
The answer to your question depends on several things. Are you going to use wide backing or regular width quilting fabric? If you're going to use regular width, how did you want to piece it? Diagonal or straight? If you piece it diagonally, you will require less yardage.
There are lots of resources on the web for how to figure quilt backing. Here is John Flynn's recipe for diagonally pieced.
http://www.flynnquilt.com/media/uplo...onalpb1103.pdf
or you can use a calculator to figure it:
http://www.multi-patch.com/html/diag...calculator.php
Here's a resource for a straight-pieced back:
http://www.ctpubblog.com/2009/05/05/...quilt-backing/