APA Style
-, . (2007).
Fifty-fifty Intro : a Speaking and Listening Course [CD AUDIO] .
:
Pearson Education, Inc, New York. 2007.
MLA Style
-, .
"Fifty-fifty Intro : a Speaking and Listening Course [CD AUDIO]".
:
Pearson Education, Inc, New York. 2007,
2007.
CD-AUDIO.