Estes, F. (2025). Design thinking: A guide to innovation. Twenty-First Century Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEstes, Fred. Design Thinking: A Guide to Innovation. Minneapolis: Twenty-First Century Books, 2025.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEstes, Fred. Design Thinking: A Guide to Innovation. Twenty-First Century Books, 2025.
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