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.
Citace podle Chicago (17th ed.)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.
Citace podle MLA (9th ed.)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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