Gaya APA
Harmer, Jeremy. (2004).
How to teach writing .
England:
Pearson Education Limitet.
Gaya Chicago
Harmer, Jeremy.
How to teach writing.
England:
Pearson Education Limitet,
2004.
Text.
Gaya MLA
Harmer, Jeremy.
How to teach writing.
England:
Pearson Education Limitet,
2004.
Text.
Gaya Turabian
Harmer, Jeremy.
How to teach writing.
England:
Pearson Education Limitet,
2004.
Print.