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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSymposium on Horticultural Economics Davis, Calif, International Society for Horticultural Science. Commission for Horticultural Economics and Management, International Horticultural Congress, और Dana C. Goodrich. Ninth Symposium on Horticultural Economics: 22nd International Horticultural Congress, Davis, California, USA, August 11-20th, 1986. Wageningen, Netherlands: International Society for Horticultural Science, 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSymposium on Horticultural Economics Davis, Calif, et al. Ninth Symposium on Horticultural Economics: 22nd International Horticultural Congress, Davis, California, USA, August 11-20th, 1986. International Society for Horticultural Science, 1987.