International Society for Horticultural Science. Commission for Urban Horticulture, Thoday, P. R., & Robinson, D. W. (1987). The Scientific management of vegetation in the urban environment: University of Bath, England, July 8-11, 1985. International Society for Horticultural Sciences.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Society for Horticultural Science. Commission for Urban Horticulture, P. R. Thoday, और D. W. Robinson. The Scientific Management of Vegetation in the Urban Environment: University of Bath, England, July 8-11, 1985. Wageningen, Netherlands: International Society for Horticultural Sciences, 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रInternational Society for Horticultural Science. Commission for Urban Horticulture, et al. The Scientific Management of Vegetation in the Urban Environment: University of Bath, England, July 8-11, 1985. International Society for Horticultural Sciences, 1987.