APA Style
The encyclopedia americana : International edition volume 21. (1995).
America:
Grolier Incorporated.
Chicago Style
The encyclopedia americana : International edition volume 21.
edition volume 21.
America:
Grolier Incorporated,
1995.
.
MLA Style
The encyclopedia americana : International edition volume 21.
edition volume 21.
America:
Grolier Incorporated,
1995.
.
Turabian Style
The encyclopedia americana : International edition volume 21.
America:
Grolier Incorporated,
1995.
.