Cita APA (7th ed.)

Humphreys, G. (1976). English grammer. Hodder & Stoughton.

Cita Chicago (17th ed.)

Humphreys, Gordon. English Grammer. London: Hodder & Stoughton, 1976.

Cita MLA (9th ed.)

Humphreys, Gordon. English Grammer. Hodder & Stoughton, 1976.