Dòng Nội dung
1
Crossroads 1 : Student's book / Irene Frankel, Cliff Meyers, Earl W. Stevick.
New York : Oxford University Press, 1991
130 p. : ill. ; 28 cm.
2
Crossroads 1 : Teacher's book / Shirley A. Brod, Earl W. Stevick.
New York : Oxford University Press, 1991
169 p. : ill.; 28 cm.
3
Crossroads 4 : Student's book / Irene Frankel, Marjorie Fuchs, Earl W. Stevick.
New York : Oxford University Press, 1994
132 p. : ill. ; 28 cm.