Pratt, H. S. (1938). A course in vertebrate zoology: A guide to the dissection and the comparative study of vertebrate animals (3a. ed.). Ginn & Co.
Citace podle Chicago (17th ed.)Pratt, Henry Sherring. A Course in Vertebrate Zoology: A Guide to the Dissection and the Comparative Study of Vertebrate Animals. 3a. ed. Boston: Ginn & Co, 1938.
Citace podle MLA (9th ed.)Pratt, Henry Sherring. A Course in Vertebrate Zoology: A Guide to the Dissection and the Comparative Study of Vertebrate Animals. 3a. ed. Ginn & Co, 1938.
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