APA (7th ed.) Zitazioa
Hawkins, J. A. (2004). Efficiency and complexity in grammars. Oxford University Press.
Chicago Style (17th ed.) Zitazioa
Hawkins, John A. Efficiency and Complexity in Grammars. Oxford ; New York: Oxford University Press, 2004.
MLA (9th ed.) Zitazioa
Hawkins, John A. Efficiency and Complexity in Grammars. Oxford University Press, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.