Gaya APA
Encyclopedia Americana Volume 30 (INDEX). (2002).
USA:
Grolier Educational.
Gaya Chicago
Encyclopedia Americana Volume 30 (INDEX).
Volume 30 (INDEX), 2002.
USA:
Grolier Educational,
2002.
Text.
Gaya MLA
Encyclopedia Americana Volume 30 (INDEX).
Volume 30 (INDEX), 2002.
USA:
Grolier Educational,
2002.
Text.
Gaya Turabian
Encyclopedia Americana Volume 30 (INDEX).
USA:
Grolier Educational,
2002.
Print.