Groddeck, G. (1961). The Book of the it. Vintage.
Chicago Style (17th ed.) ZitazioaGroddeck, Georg. The Book of the It. New York: Vintage, 1961.
MLA (9th ed.) ZitazioaGroddeck, Georg. The Book of the It. Vintage, 1961.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.