Hadfield, J., & Hadfield, C. (1999). Oxford basic: Simple listening activities. Oxford: Oxford Univ. Press.
Trích dẫn kiểu ChicagoHadfield, Jill, và Charles Hadfield. Oxford Basic: Simple Listening Activities. Oxford: Oxford Univ. Press, 1999.
MLA引文Hadfield, Jill, và Charles Hadfield. Oxford Basic: Simple Listening Activities. Oxford: Oxford Univ. Press, 1999.
警告：這些引文格式不一定是100％准確.