Gaya APA
Cotton, David. (2008).
Language Leader: Upper Intermediate .
Harlow:
Longman.
Gaya Chicago
Cotton, David.
Language Leader: Upper Intermediate.
Harlow:
Longman,
2008.
Non-fiction.
Gaya MLA
Cotton, David.
Language Leader: Upper Intermediate.
Harlow:
Longman,
2008.
Non-fiction.
Gaya Turabian
Cotton, David.
Language Leader: Upper Intermediate.
Harlow:
Longman,
2008.
Non-fiction.