Gaya APA
English for Students Of Economics. (1979).
Jakarta:
.
Gaya Chicago
English for Students Of Economics.
Edisi Pertama.
Jakarta:
,
1979.
Text.
Gaya MLA
English for Students Of Economics.
Edisi Pertama.
Jakarta:
,
1979.
Text.
Gaya Turabian
English for Students Of Economics.
Jakarta:
,
1979.
Print.