Gaya APA
Depdikbud, .
(1987).
Active English for SMA
(
Cet-1)
.
Surabaya:
Bina Pustaka.
Gaya MLA
Depdikbud, .
"Active English for SMA".
Cet-1
Surabaya:
Bina Pustaka,
1987.
Text.