APA (7th ed.) Citation

Hawkins, J. D. (1991). Gene structure and expression (3rd edition.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Hawkins, John D. Gene Structure and Expression. 3rd edition. Cambridge: Cambridge University Press, 1991.

MLA (8th ed.) Citation

Hawkins, John D. Gene Structure and Expression. 3rd edition. Cambridge University Press, 1991.