Cullen, J. (1997). The identification of flowering plant families: Including a key to those native and cultivated in north temperate regions (4th ed., completely rev. and edited.). Cambridge University Press.
Чикаго стиль цитування (17-те видання)Cullen, J. The Identification of Flowering Plant Families: Including a Key to Those Native and Cultivated in North Temperate Regions. 4th ed., completely rev. and edited. Cambridge, UK ; New York: Cambridge University Press, 1997.
Стиль цитування MLA (9-ме видання)Cullen, J. The Identification of Flowering Plant Families: Including a Key to Those Native and Cultivated in North Temperate Regions. 4th ed., completely rev. and edited. Cambridge University Press, 1997.
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