Gaya APA
Alexander, L, G.
(1999).
Fluency In English=New Concept English
.
Yogyakarta:
Yogyakarta: Kanisius.
Gaya MLA
Alexander, L., G..
"Fluency In English=New Concept English".
Yogyakarta:
Yogyakarta: Kanisius,
1999.
Text.