Gaya APA
Alexander, L.G.. (1985).
New concept English developing skills .
Yogyakarta:
Kanisius.
Gaya Chicago
Alexander, L.G..
New concept English developing skills.
Yogyakarta:
Kanisius,
1985.
Text.
Gaya MLA
Alexander, L.G..
New concept English developing skills.
Yogyakarta:
Kanisius,
1985.
Text.
Gaya Turabian
Alexander, L.G..
New concept English developing skills.
Yogyakarta:
Kanisius,
1985.
Print.