APA Style
Acklam, Richard. (1990).
THINK First Certificate .
England:
Longman.
Chicago Style
Acklam, Richard.
THINK First Certificate.
England:
Longman,
1990.
Text.
MLA Style
Acklam, Richard.
THINK First Certificate.
England:
Longman,
1990.
Text.
Turabian Style
Acklam, Richard.
THINK First Certificate.
England:
Longman,
1990.
Print.