Roberts, J. H. Darwinism, American Protestant thinkers, and the puzzle of motivation: Jon H. Roberts. Disseminating darwinism : the role of place, race, religion, and gender.(2001).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoberts, Jon H. "Darwinism, American Protestant Thinkers, and the Puzzle of Motivation: Jon H. Roberts." Disseminating Darwinism : The Role of Place, Race, Religion, and Gender.(2001) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रRoberts, Jon H. "Darwinism, American Protestant Thinkers, and the Puzzle of Motivation: Jon H. Roberts." Disseminating Darwinism : The Role of Place, Race, Religion, and Gender.(2001), .
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