Dyfyniad APA

Hadfield, J., & Hadfield, C. (1999). Classroom English. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Hadfield, Jill, và Charles Hadfield. Classroom English. Oxford: Oxford University Press, 1999.

Dyfyniad MLA

Hadfield, Jill, và Charles Hadfield. Classroom English. Oxford: Oxford University Press, 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.