Henry David Thoreau (2008). “Walden, Civil Disobedience, and Other Writings: Authoritative Texts, Journal, Reviews and Posthumous Assessments, Criticism”, W W Norton & Company Incorporated
Lisa Scottoline, Francesca Serritella (2015). “Truly Funny Stories Vol. 1: Why My Third Husband Will Be a Dog and My Nest Isn't Empty, It Just Has More Closet Space”, p.96, St. Martin's Press
Solomon ben Judah Ibn Gabirol, Benjamin Henry Ascher (1859). “A Choice of Pearls: Embracing a Collection of the Most Genuine Ethical Sentences, Maxims and Salutary Reflections”, p.145
Jen Lancaster (2007). “Bright Lights, Big Ass: A Self-Indulgent, Surly, Ex-Sorority Girl's Guide to Why it Often Sucks in the City, or Who are These Idiots and Why Do They All Live Next Door to Me?”, p.39, Penguin