Heslop-Harrison, J. (1953). New concepts in flowering plant taxonomy. Harvard University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHeslop-Harrison, J. New Concepts in Flowering Plant Taxonomy. Cambridge, Mass: Harvard University Press, 1953.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHeslop-Harrison, J. New Concepts in Flowering Plant Taxonomy. Harvard University Press, 1953.
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