Gaya APA
English 900 workbook one. (1970).
tempaterbit:
penerbit.
Gaya Chicago
English 900 workbook one.
Edisi.
tempaterbit:
penerbit,
1970.
Text.
Gaya MLA
English 900 workbook one.
Edisi.
tempaterbit:
penerbit,
1970.
Text.
Gaya Turabian
English 900 workbook one.
tempaterbit:
penerbit,
1970.
Print.