Posted: 31/05/2017 at 18:03
It's not a book, but I find Paul Zimmerman's many online videos and explanations are the clearest I've found.
This one should cover what you need
But if you want to treat yourself and really inform your understanding of the subject, my pruning Bible is John Cushnie's How to Prune ... for many years John Cushnie was a highly respected stalwart of Gardener's Question Time
It has a comprehensive section on roses.
Pub. Kyle Cathie Ltd
Last edited: 31 May 2017 18:04:49