Gaya APA
The Americana annual 1981. (1981).
tempaterbit:
penerbit.
Gaya Chicago
The Americana annual 1981.
Edisi.
tempaterbit:
penerbit,
1981.
Text.
Gaya MLA
The Americana annual 1981.
Edisi.
tempaterbit:
penerbit,
1981.
Text.
Gaya Turabian
The Americana annual 1981.
tempaterbit:
penerbit,
1981.
Print.