Charles Darwin (2010). “The Works of Charles Darwin, Volume 7: The Geology of the Voyage of the H. M. S. Beagle, Part I: Structure and Distribution of Coral Reefs”, p.3, NYU Press
F. Scott Fitzgerald (2015). “Babylon Revisited and Other Stories (Fitzgerald’s Greatest Short Stories): A Collection of short stories from the author of The Great Gatsby, The Side of Paradise, Tender Is the Night, The Beautiful and Damned, The Curious Case of Benjamin Button and many other notable works”, p.29, e-artnow