Cita APA (7a ed.)

Halliday, T. (2006). Oxford (Second edition, updated.). APA Publications.

Cita Chicago Style (17a ed.)

Halliday, Tony. Oxford. Second edition, updated. Singapore: APA Publications, 2006.

Cita MLA (9a ed.)

Halliday, Tony. Oxford. Second edition, updated. APA Publications, 2006.