Lesley, T. (2004). Grammar Sense 1: Workbook. England: Oxford University Press.
Chicago Style aipamenaLesley, Tay. Grammar Sense 1: Workbook. England: Oxford University Press, 2004.
MLA aipamenaLesley, Tay. Grammar Sense 1: Workbook. England: Oxford University Press, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.