Gaya APA
Alexander, L. G.. (1975).
First Things First Students' Book New Concept English (Pertama).
Yogyakarta:
Penerbit Kanisius.
Gaya Chicago
Alexander, L. G..
First Things First Students' Book New Concept English.
Pertama
Yogyakarta:
Penerbit Kanisius,
1975.
Text.
Gaya MLA
Alexander, L. G..
First Things First Students' Book New Concept English.
Pertama
Yogyakarta:
Penerbit Kanisius,
1975.
Text.
Gaya Turabian
Alexander, L. G..
First Things First Students' Book New Concept English.
Pertama
Yogyakarta:
Penerbit Kanisius,
1975.
Print.