APA (7 वां संस्करण) प्रशस्ति पत्र
Porter, D. M., & Graham, P. W. (2016). Darwin's sciences: How Charles Darwin voyaged from rocks to worms in his search for facts to explain how the earth, its geological features, and its inhabitants evolved. Wiley Blackwell.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Porter, Duncan M., और Peter W. Graham. Darwin's Sciences: How Charles Darwin Voyaged from Rocks to Worms in His Search for Facts to Explain How the Earth, Its Geological Features, and Its Inhabitants Evolved. Chichester, [England]: Wiley Blackwell, 2016.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Porter, Duncan M., और Peter W. Graham. Darwin's Sciences: How Charles Darwin Voyaged from Rocks to Worms in His Search for Facts to Explain How the Earth, Its Geological Features, and Its Inhabitants Evolved. Wiley Blackwell, 2016.
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