Lovejoy, Ann. 2001. Ann Lovejoy’s Organic Garden Design School: a guide to creating your own beautiful, easy-care garden. Rodale Inc.: Emmaus, PA.
Lots of detail on garden design with a workbook to plan your own garden.

Roth, Sally. 1997. Natural Landscaping: Gardening with Nature to Create a Backyard Paradise. Rodale Inc.: New York, NY.