Lawrence, G. (1973). Taxonomy of vascular plants. Oxford I B H publishing company.
Chicago Style aipamenaLawrence, G.H.M. Taxonomy of Vascular Plants. New Delhi: Oxford I B H publishing company, 1973.
MLA aipamenaLawrence, G.H.M. Taxonomy of Vascular Plants. Oxford I B H publishing company, 1973.
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