Gaya APA
BB.Dwijatmoko, . (1990).
Communicative grammar practice : forfirst year english department university students .
Yogyakarta:
Kanisius.
Gaya MLA
BB.Dwijatmoko, .
"Communicative grammar practice : forfirst year english department university students".
Yogyakarta:
Kanisius,
1990.
Text.