Gaya APA
Inet Gunawan, dkk. (2015).
4 Steps English (Cetakan ke 2).
Solo:
SDTEL Publishing.
Gaya Chicago
Inet Gunawan, dkk.
4 Steps English.
Cetakan ke 2
Solo:
SDTEL Publishing,
2015.
Text.
Gaya MLA
Inet Gunawan, dkk.
4 Steps English.
Cetakan ke 2
Solo:
SDTEL Publishing,
2015.
Text.
Gaya Turabian
Inet Gunawan, dkk.
4 Steps English.
Cetakan ke 2
Solo:
SDTEL Publishing,
2015.
Print.