Gaya APA
Langan, John. (2001).
English skills (7).
Boston, Massachusetts:
McGraw Hill.
Gaya Chicago
Langan, John.
English skills.
7
Boston, Massachusetts:
McGraw Hill,
2001.
Text.
Gaya MLA
Langan, John.
English skills.
7
Boston, Massachusetts:
McGraw Hill,
2001.
Text.
Gaya Turabian
Langan, John.
English skills.
7
Boston, Massachusetts:
McGraw Hill,
2001.
Print.