Raven, C. E. (1950). John Ray: Naturalist, his life and works ([2d ed.].). University Press.
Citace podle Chicago (17th ed.)Raven, Charles E. John Ray: Naturalist, His Life and Works. [2d ed.]. Cambridge [Eng.]: University Press, 1950.
Citace podle MLA (8th ed.)Raven, Charles E. John Ray: Naturalist, His Life and Works. [2d ed.]. University Press, 1950.
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