Kettering, C. (2026, April 9). Charles Kettering quote. Quotesia. Retrieved from https://quotesia.com/charles-kettering-quote/117970
Kettering, Charles. “Charles Kettering quote”. Quotesia. 9 Apr. 2026: https://quotesia.com/charles-kettering-quote/117970.
Kettering, C. (2026). Quotesia [Online]. Available at: https://quotesia.com/charles-kettering-quote/117970 (Accessed: April 9 2026).
Kettering, Charles. “Charles Kettering quote” Quotesia. https://quotesia.com/charles-kettering-quote/117970 (accessed April 9, 2026).
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