Hofstadter, D., & Pratt, S. (2013). Surfaces and essences: Analogy as the fuel and fire of thinking (Unabridged.). Ascent Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHofstadter, Douglas, और Sean Pratt. Surfaces and Essences: Analogy as the Fuel and Fire of Thinking. Unabridged. Rego Park: Ascent Audio, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHofstadter, Douglas, और Sean Pratt. Surfaces and Essences: Analogy as the Fuel and Fire of Thinking. Unabridged. Ascent Audio, 2013.
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