APA (7th ed.) Citation

ZANDVOORT, R., & VAN EK, J. (1980). A handbook of english grammar -- Ed.7. ELBS and Logman Group.

Chicago Style (17th ed.) Citation

ZANDVOORT, R.W, and J.A VAN EK. A Handbook of English Grammar -- Ed.7. London: ELBS and Logman Group, 1980.

MLA (9th ed.) Citation

ZANDVOORT, R.W, and J.A VAN EK. A Handbook of English Grammar -- Ed.7. ELBS and Logman Group, 1980.