Gaya APA
Dwijatmoko, B. (1990).
Communicative grammar practice: for first year English Department University Students .
Yogyakarta:
Kanisius.
Gaya MLA
Dwijatmoko, B.B.
"Communicative grammar practice: for first year English Department University Students".
Yogyakarta:
Kanisius,
1990.
Text.