Gaya APA
The Americana annual 1991. (1991).
tempaterbit:
penerbit.
Gaya Chicago
The Americana annual 1991.
Edisi.
tempaterbit:
penerbit,
1991.
Text.
Gaya MLA
The Americana annual 1991.
Edisi.
tempaterbit:
penerbit,
1991.
Text.
Gaya Turabian
The Americana annual 1991.
tempaterbit:
penerbit,
1991.
Print.