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Sloan, M.C. (2010). "Aristotle's Nicomachean Ethics as the Original Locus for the Septem Circumstantiae". Classical Philology. 105 (3): 236–251. doi:10.1086/656196. S2CID170672521.
Bleyer, Willard Grosvenor (1913). "IV. Structure and Style in News Stories". Newspaper Writing and Editing. Cambridge, Massachusetts: Houghton Mifflin. p. 66. Archived from the original on December 18, 2023. Retrieved January 28, 2024.