Gaya APA
Alexander, L. (2000).
First things firts student s book: an integrated course for beginners + cassets .
Yogyakarta:
Kanisius.
Gaya MLA
Alexander, L.G..
"First things firts student s book: an integrated course for beginners + cassets".
Yogyakarta:
Kanisius,
2000.
Text.