Pyle, R. M. (2020). Nature matrix: New and selected essays (First paperback edition.). Counterpoint.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPyle, Robert Michael. Nature Matrix: New and Selected Essays. First paperback edition. Berkeley, California: Counterpoint, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPyle, Robert Michael. Nature Matrix: New and Selected Essays. First paperback edition. Counterpoint, 2020.
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