Cita APA (7a ed.)

Hawkins, J. A. (2004). Efficiency and complexity in grammars. Oxford University Press.

Cita Chicago Style (17a ed.)

Hawkins, John A. Efficiency and Complexity in Grammars. Oxford ; New York: Oxford University Press, 2004.

Cita MLA (9a ed.)

Hawkins, John A. Efficiency and Complexity in Grammars. Oxford University Press, 2004.