Gaya APA
Fluency in english. (1978).
Yogyakarta:
Kanisius.
Gaya Chicago
Fluency in english.
.
Yogyakarta:
Kanisius,
1978.
Text.
Gaya MLA
Fluency in english.
.
Yogyakarta:
Kanisius,
1978.
Text.
Gaya Turabian
Fluency in english.
Yogyakarta:
Kanisius,
1978.
Print.