Harvey, E. N. (1920). Nature of animal light. J.B. Lippincott company.
Chicago-čujuhus (17. p.)Harvey, E. Newton. Nature of Animal Light. Philadelphia: J.B. Lippincott company, 1920.
MLA-čujuhus (9. p.)Harvey, E. Newton. Nature of Animal Light. J.B. Lippincott company, 1920.
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