APA Style
Encyclopedia Of Knowledege Volume 20. ([s.a.]).
Danbury:
Grolier.
Chicago Style
Encyclopedia Of Knowledege Volume 20.
.
Danbury:
Grolier,
[s.a.].
Buku.
MLA Style
Encyclopedia Of Knowledege Volume 20.
.
Danbury:
Grolier,
[s.a.].
Buku.
Turabian Style
Encyclopedia Of Knowledege Volume 20.
Danbury:
Grolier,
[s.a.].
Buku.