The Great Citrus Book, by Allen Susser. (Ten Speed Press)
The Backyard Orchardist,by Stella Otto.
Designing and Maintaining Your Edible Landscape Naturally, by Robert Kourick
Fruit (the Simon and Schuster Step-by-Step Encyclopedia of Practical Gardening). New York, Simon & Schuster.
Lemons: The Kitchen Cure-All, by Paul Lonergan and Jenni Whittaker
Lemon Zest: 175 Recipes with a Twist, Lori Longbothan
Citrus: How to Grow and Use Citrus Fruits, Flowers, and Foliage by Monica Moran Brandies
Lemon: A Global History by Tony Sonneman (Reaktion Books 2012, London)