1. Physics
2. Aristotle (1999). Aristotle’s Metaphysics. J. Sachs Trans., Green Lion Press. (Original work published circa 330 BC. Book 4, section 1011b)
3. CanolaInfo (2023). The History of Canola Oil. https://www.canolainfo.org/canola/the-history-of-canola-oil.php
4. Fundamentals of Mechanics
5. Copernicus, N. (1995). On the Revolution of Heavenly Spheres. C. Wallis Trans., Prometheus Books. (Original work published 1543)