Zubrin, R. (2025, October 1). Robert Zubrin quote. Quotesia. Retrieved from https://quotesia.com/robert-zubrin-quote/619930
Zubrin, Robert. “Robert Zubrin quote”. Quotesia. 1 Oct. 2025: https://quotesia.com/robert-zubrin-quote/619930.
Zubrin, R. (2025). Quotesia [Online]. Available at: https://quotesia.com/robert-zubrin-quote/619930 (Accessed: October 1 2025).
Zubrin, Robert. “Robert Zubrin quote” Quotesia. https://quotesia.com/robert-zubrin-quote/619930 (accessed October 1, 2025).
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