Cita APA (7a ed.)

Morley, G. (1985). An Introduction to systemic grammar. Macmillan.

Cita Chicago Style (17a ed.)

Morley, G.D. An Introduction to Systemic Grammar. London: Macmillan, 1985.

Cita MLA (9a ed.)

Morley, G.D. An Introduction to Systemic Grammar. Macmillan, 1985.