APA Style
The new book of knoelwdge : Volume 21 (Combined index). (1984).
United States:
Grolier.
Chicago Style
The new book of knoelwdge : Volume 21 (Combined index).
1984.
United States:
Grolier,
1984.
Text.
MLA Style
The new book of knoelwdge : Volume 21 (Combined index).
1984.
United States:
Grolier,
1984.
Text.
Turabian Style
The new book of knoelwdge : Volume 21 (Combined index).
United States:
Grolier,
1984.
Print.