Gaya APA
Purwanto, S. (1999).
Introducing General Liguistics : To The Students Of English As a Foreign Language .
Semarang:
STIBA-AKI.
Gaya MLA
Purwanto, Sugeng.
"Introducing General Liguistics : To The Students Of English As a Foreign Language".
Semarang:
STIBA-AKI,
1999.
Text.