Cita APA (7th ed.)

West M. A., A. S. (1957). The revised English Grammar for beginnres. Cambridge.

Cita Chicago (17th ed.)

West M. A., Alfred S. The Revised English Grammar for Beginnres. Gran Bretaña: Cambridge, 1957.

Cita MLA (9th ed.)

West M. A., Alfred S. The Revised English Grammar for Beginnres. Cambridge, 1957.