Cita APA (7a ed.)

Morley, G. D. (1985). An introduction to systemic grammar. MacMillan.

Cita Chicago Style (17a ed.)

Morley, George David. An Introduction to Systemic Grammar. Londres: MacMillan, 1985.

Cita MLA (9a ed.)

Morley, George David. An Introduction to Systemic Grammar. MacMillan, 1985.