Cohen, R. S., & Cohen, R. S. (1984). Methodology, metaphysics and the history of science: In memory of Benjamin Nelson. D. Reidel Pub.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCohen, Robert S., और Robert S.;Wartofsky Cohen. Methodology, Metaphysics and the History of Science: In Memory of Benjamin Nelson. D. Reidel Pub, 1984.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCohen, Robert S., और Robert S.;Wartofsky Cohen. Methodology, Metaphysics and the History of Science: In Memory of Benjamin Nelson. D. Reidel Pub, 1984.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.