APA Style
ENCYCLOPEDIA OF KNOWLEDGE VOL. 20. (1991).
Danbury, Connecticut, U.S.A.:
Grolier Incorporated.
Chicago Style
ENCYCLOPEDIA OF KNOWLEDGE VOL. 20.
.
Danbury, Connecticut, U.S.A.:
Grolier Incorporated,
1991.
Text.
MLA Style
ENCYCLOPEDIA OF KNOWLEDGE VOL. 20.
.
Danbury, Connecticut, U.S.A.:
Grolier Incorporated,
1991.
Text.
Turabian Style
ENCYCLOPEDIA OF KNOWLEDGE VOL. 20.
Danbury, Connecticut, U.S.A.:
Grolier Incorporated,
1991.
Print.