Cita APA (7th ed.)

Halliday, M. A. K. (1989). Spoken and written language. Oxford University.

Cita Chicago (17th ed.)

Halliday, Michael Alexander Kirkwood. Spoken and Written Language. Oxford: Oxford University, 1989.

Cita MLA (9th ed.)

Halliday, Michael Alexander Kirkwood. Spoken and Written Language. Oxford University, 1989.