Porley, R. D. (2013). England's rare mosses & liverworts: Their history, ecology and conservation. Princeton University Press.
Čikaški stil citiranja (17. izdanje)Porley, Ron D. England's Rare Mosses & Liverworts: Their History, Ecology and Conservation. Princeton, NJ: Princeton University Press, 2013.
MLA način citiranja (9. izdanje)Porley, Ron D. England's Rare Mosses & Liverworts: Their History, Ecology and Conservation. Princeton University Press, 2013.
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