Swan, M. (2003). Practical English usage (Fifth impression.). Oxford University Press.
Chicago Style (17. basım) AtıfSwan, Michael. Practical English Usage. Fifth impression. Oxford ; New York: Oxford University Press, 2003.
MLA (8th ed.) AtıfSwan, Michael. Practical English Usage. Fifth impression. Oxford University Press, 2003.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..