Gairns, R., & Redman, S. (2006). Natural English: Elementary student's book. Oxford University Press.
Chicago (17e ed.) BronvermeldingGairns, Ruth, en Stuart Redman. Natural English: Elementary Student's Book. Oxford: Oxford University Press, 2006.
MLA (8e ed.) BronvermeldingGairns, Ruth, en Stuart Redman. Natural English: Elementary Student's Book. Oxford University Press, 2006.
Let op: Deze citaties zijn niet altijd 100% accuraat.