Zwicky, F. (1969). Discovery, invention, research through the morphological approach. Macmillan.
Chicago-čujuhus (17. p.)Zwicky, F. Discovery, Invention, Research Through the Morphological Approach. New York: Macmillan, 1969.
MLA-čujuhus (9. p.)Zwicky, F. Discovery, Invention, Research Through the Morphological Approach. Macmillan, 1969.
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