Gaya APA
Boyd, Elaine. (2008).
Activate: B2 .
Harlow:
Longman.
Gaya Chicago
Boyd, Elaine.
Activate: B2.
Harlow:
Longman,
2008.
Non-fiction.
Gaya MLA
Boyd, Elaine.
Activate: B2.
Harlow:
Longman,
2008.
Non-fiction.
Gaya Turabian
Boyd, Elaine.
Activate: B2.
Harlow:
Longman,
2008.
Non-fiction.