APA Style
The Encyclopedia Americana International Edition Volume 21. (1970).
Amerika:
Americana Corporation.
Chicago Style
The Encyclopedia Americana International Edition Volume 21.
Edition Volume 21.
Amerika:
Americana Corporation,
1970.
Text.
MLA Style
The Encyclopedia Americana International Edition Volume 21.
Edition Volume 21.
Amerika:
Americana Corporation,
1970.
Text.
Turabian Style
The Encyclopedia Americana International Edition Volume 21.
Amerika:
Americana Corporation,
1970.
Print.