Crystal, D., & Quirk, R. (1985). A Comprehensive grammar of the English language. Longman.
Citación estilo ChicagoCrystal, David, and Randolph Quirk. A Comprehensive Grammar of the English Language. London: Longman, 1985.
Cita MLACrystal, David, and Randolph Quirk. A Comprehensive Grammar of the English Language. Longman, 1985.
Warning: These citations may not always be 100% accurate.