Heinlein, R. A. (2025, August 1). Robert A. Heinlein quote. Quotesia. Retrieved from https://quotesia.com/robert-a-heinlein-quote/612704
Heinlein, Robert A.. “Robert A. Heinlein quote”. Quotesia. 1 Aug. 2025: https://quotesia.com/robert-a-heinlein-quote/612704.
Heinlein, R. A. (2025). Quotesia [Online]. Available at: https://quotesia.com/robert-a-heinlein-quote/612704 (Accessed: August 1 2025).
Heinlein, Robert A.. “Robert A. Heinlein quote” Quotesia. https://quotesia.com/robert-a-heinlein-quote/612704 (accessed August 1, 2025).
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