APA Style
Hackman, Sue, Howe, Alan. (2005).
Checkpoint English. 2 .
:
.
Chicago Style
Hackman, Sue, Howe, Alan.
Checkpoint English. 2.
:
,
2005.
Text.
MLA Style
Hackman, Sue, Howe, Alan.
Checkpoint English. 2.
:
,
2005.
Text.
Turabian Style
Hackman, Sue, Howe, Alan.
Checkpoint English. 2.
:
,
2005.
Print.