Gaya APA
Inet Gunawan, dkk. (2012).
4 Steps English (123 English) .
JAKARTA:
123 English / Pustaka Indonesia.
Gaya Chicago
Inet Gunawan, dkk.
4 Steps English (123 English).
JAKARTA:
123 English / Pustaka Indonesia,
2012.
Text.
Gaya MLA
Inet Gunawan, dkk.
4 Steps English (123 English).
JAKARTA:
123 English / Pustaka Indonesia,
2012.
Text.
Gaya Turabian
Inet Gunawan, dkk.
4 Steps English (123 English).
JAKARTA:
123 English / Pustaka Indonesia,
2012.
Print.