APA (7th ed.) Citation

Butt, J., & Benjamin, C. (2000). A new reference grammar of modern Spanish (3. ed.). Arnold.

Chicago Style (17th ed.) Citation

Butt, John, and Carmen Benjamin. A New Reference Grammar of Modern Spanish. 3. ed. London: Arnold, 2000.

MLA (9th ed.) Citation

Butt, John, and Carmen Benjamin. A New Reference Grammar of Modern Spanish. 3. ed. Arnold, 2000.