APA (7th ed.) Citation

Heaton J. B. & Turton N. D. (1999). Longman Dictionary of Common Errors: Workbook (2nd ed.). Harlow, Longman, 1999.

Chicago Style (17th ed.) Citation

Heaton J. B. and Turton N. D. Longman Dictionary of Common Errors: Workbook. 2nd ed. Harlow, Longman, 1999, 1999.

MLA (9th ed.) Citation

Heaton J. B. and Turton N. D. Longman Dictionary of Common Errors: Workbook. 2nd ed. Harlow, Longman, 1999, 1999.