Gaya APA
Up to date english grammar. (2003).
Jakarta:
Setia Kawan Press.
Gaya Chicago
Up to date english grammar.
Cet. 3.
Jakarta:
Setia Kawan Press,
2003.
Text.
Gaya MLA
Up to date english grammar.
Cet. 3.
Jakarta:
Setia Kawan Press,
2003.
Text.
Gaya Turabian
Up to date english grammar.
Jakarta:
Setia Kawan Press,
2003.
Print.