Rhododendrons & Azaleas: A Colour Guide
Success With Rhododendrons and Azaleas, Revised Edition
Rhododendrons: An illustrated guide to varieties, cultivation and care, with step-by-step instructions and over 135 beautiful photographs
Hardy Rhododendron Species: A Guide to Identification
Taylor's Guide to Ground Covers: More than 400 Flowering and Foliage Ground Covers for Every Garden Situation - Flexible Binding (Taylor's Gardening Guides)
Rhododendrons in the Landscape