Markley, R., & Sheeler, W. D. (1983). Spot drills1: Ilustrated grammar exercises. New York: Oxford University Press.
Chicago Style CitationMarkley, Rayner, and Willard D. Sheeler. Spot Drills1: Ilustrated Grammar Exercises. New York: Oxford University Press, 1983.
MLA CitationMarkley, Rayner, and Willard D. Sheeler. Spot Drills1: Ilustrated Grammar Exercises. New York: Oxford University Press, 1983.
Warning: These citations may not always be 100% accurate.