APA (7th ed.) Citation

Hawkins, J. A. (2014). Cross-linguistic variation and efficiency. Oxford University Press.

Chicago Style (17th ed.) Citation

Hawkins, John A. Cross-linguistic Variation and Efficiency. Oxford, United Kingdom: Oxford University Press, 2014.

MLA (9th ed.) Citation

Hawkins, John A. Cross-linguistic Variation and Efficiency. Oxford University Press, 2014.