Gaya APA
Incorporated, Grolier. (2007).
The Americana Annual .
:
.
Gaya Chicago
Incorporated, Grolier.
The Americana Annual.
:
,
2007.
Text.
Gaya MLA
Incorporated, Grolier.
The Americana Annual.
:
,
2007.
Text.
Gaya Turabian
Incorporated, Grolier.
The Americana Annual.
:
,
2007.
Print.