Gaya APA
Alexander, L, G.
(1983).
Practice and Progress: New Concept English
.
Yogyakarta:
Kanisius.
Gaya MLA
Alexander, L., G..
"Practice and Progress: New Concept English".
Yogyakarta:
Kanisius,
1983.
GEN - Bacaan/Seri Non-Fiksi.