Zwicky, F. (1969). Discovery, invention, research through the morphological approach. Macmillan.
Lua i Stíl Chicago (17ú heag.)Zwicky, F. Discovery, Invention, Research Through the Morphological Approach. New York: Macmillan, 1969.
Lua MLA (9ú heag.)Zwicky, F. Discovery, Invention, Research Through the Morphological Approach. Macmillan, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.