Gregory B. Stone. (1981). Spirit of enterprise: The 1981 Rolex Awards. London: Harrap.
Trích dẫn kiểu ChicagoGregory B. Stone. Spirit of Enterprise: The 1981 Rolex Awards. London: Harrap, 1981.
ציטוט MLAGregory B. Stone. Spirit of Enterprise: The 1981 Rolex Awards. London: Harrap, 1981.
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