Gaya APA
Active english for Indonesia workbook two. (1980).
tempaterbit:
penerbit.
Gaya Chicago
Active english for Indonesia workbook two.
Edisi.
tempaterbit:
penerbit,
1980.
Text.
Gaya MLA
Active english for Indonesia workbook two.
Edisi.
tempaterbit:
penerbit,
1980.
Text.
Gaya Turabian
Active english for Indonesia workbook two.
tempaterbit:
penerbit,
1980.
Print.