Gaya APA
Alexander, L.G.. (1975).
First Things First Students Book .
Yogyakarta:
Kanisius.
Gaya Chicago
Alexander, L.G..
First Things First Students Book.
Yogyakarta:
Kanisius,
1975.
.
Gaya MLA
Alexander, L.G..
First Things First Students Book.
Yogyakarta:
Kanisius,
1975.
.
Gaya Turabian
Alexander, L.G..
First Things First Students Book.
Yogyakarta:
Kanisius,
1975.
.