Drucker, P. (2025, October 28). Peter Drucker quote. Quotesia. Retrieved from https://quotesia.com/peter-drucker-quote/574074
Drucker, Peter. “Peter Drucker quote”. Quotesia. 28 Oct. 2025: https://quotesia.com/peter-drucker-quote/574074.
Drucker, P. (2025). Quotesia [Online]. Available at: https://quotesia.com/peter-drucker-quote/574074 (Accessed: October 28 2025).
Drucker, Peter. “Peter Drucker quote” Quotesia. https://quotesia.com/peter-drucker-quote/574074 (accessed October 28, 2025).
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