APA (7th ed.) Citation

Dickinson, L., & Mackin, R. (1974). Varieties of spoken english: Workbook (3rd imp.). Oxford University Press.

Chicago Style (17th ed.) Citation

Dickinson, Leslie, and Ronald Mackin. Varieties of Spoken English: Workbook. 3rd imp. London: Oxford University Press, 1974.

MLA (9th ed.) Citation

Dickinson, Leslie, and Ronald Mackin. Varieties of Spoken English: Workbook. 3rd imp. Oxford University Press, 1974.