Gaya APA
Easy way to English. (2002).
:
Gitamedia Press.
Gaya Chicago
Easy way to English.
Buku kedua.
:
Gitamedia Press,
2002.
Text.
Gaya MLA
Easy way to English.
Buku kedua.
:
Gitamedia Press,
2002.
Text.
Gaya Turabian
Easy way to English.
:
Gitamedia Press,
2002.
Print.