Gaya APA
Improve Your Punctuation. (2009).
Glasgow:
Harpercollins.
Gaya Chicago
Improve Your Punctuation.
.
Glasgow:
Harpercollins,
2009.
Buku.
Gaya MLA
Improve Your Punctuation.
.
Glasgow:
Harpercollins,
2009.
Buku.
Gaya Turabian
Improve Your Punctuation.
Glasgow:
Harpercollins,
2009.
Buku.