Dòng Nội dung
1
Headway elementary pronunciation / Sarah Cunningham, Peter Moor.
Oxford, England : Oxford University Press, 1995.
57 tr. : ill. ; 28 cm.
2
Headway upper - intermediate Pronunciation / Sarah Cunningham, Bill Bowler
Oxford, England : Oxford University Press, 1992.
108 tr. : ill. ; 28 cm.