APA (7th ed.) Zitazioa
Croft, W. (1990). Typology and universals. Cambridge University Press.
Chicago Style (17th ed.) Zitazioa
Croft, William. Typology and Universals. Cambridge: Cambridge University Press, 1990.
MLA (9th ed.) Zitazioa
Croft, William. Typology and Universals. Cambridge University Press, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.