Cita APA (7th ed.)

Leech, G. N. (1969). Towards a semantic description of English. Longmans.

Cita Chicago (17th ed.)

Leech, Geoffrey N. Towards a Semantic Description of English. [London]: Longmans, 1969.

Cita MLA (9th ed.)

Leech, Geoffrey N. Towards a Semantic Description of English. Longmans, 1969.