Gaya APA
Alexander, L, G. (1978).
New Concept English Practice and Progress (Recoeded Drills: Tapescript) (Cet.1).
Yogyakarta:
Penerbit Kanisius.
Gaya MLA
Alexander, L., G..
"New Concept English Practice and Progress (Recoeded Drills: Tapescript)".
Cet.1
Yogyakarta:
Penerbit Kanisius,
1978.
Teksbook.