APA Style
Encyclopedia Americana 7. (1976).
:
Americana Corporation.
Chicago Style
Encyclopedia Americana 7.
.
:
Americana Corporation,
1976.
Text.
MLA Style
Encyclopedia Americana 7.
.
:
Americana Corporation,
1976.
Text.
Turabian Style
Encyclopedia Americana 7.
:
Americana Corporation,
1976.
Print.