Potten, H., & Potten, J. (2001). Clockwise: Elementary classbook [Băng Casset]. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoPotten, Heather, và Jonathan Potten. Clockwise: Elementary Classbook [Băng Casset]. Oxford: Oxford University Press, 2001.
ציטוט MLAPotten, Heather, và Jonathan Potten. Clockwise: Elementary Classbook [Băng Casset]. Oxford: Oxford University Press, 2001.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.