● Berkeley, George. The Analyst, edited by David R. Wilkins, 2002. Based on the original 1734 edition. https://www.maths.tcd.ie/pub/HistMath/People/Berkeley/Analyst/Analyst.pdf.
● Frost, Robert. “Education by Poetry.” Amherst Graduates’ Quarterly (February 1931). http://www.en.utexas.edu/amlit/amlitprivate/scan/edbypo.html.
