"Growing with the Seasons: A Sharing of Insights Into the Creative Aspects of Organic Gardening". Book by Frank Giannangelo and Vicky Giannangelo, July 1, 2008.
Epictetus (1758). “All the Works of Epictetus: Which are Now Extant; Consisting of His Discourses, Preserved by Arrian, in Four Books, the Enchiridion, and Fragments”, p.227