APA (7th ed.) Citation

Dickinson, L., & Mackin, R. j. a. (1969). Varieties of spoken English: Workbook. Oxford University Press.

Chicago Style (17th ed.) Citation

Dickinson, Leslie, and Ronald joint auth Mackin. Varieties of Spoken English: Workbook. London: Oxford University Press, 1969.

MLA (9th ed.) Citation

Dickinson, Leslie, and Ronald joint auth Mackin. Varieties of Spoken English: Workbook. Oxford University Press, 1969.