Penggayaan APA
GROLIER Academic Encyclopedia, volume 21 :. (1991).
[s.n]:
Grolier International.
Chicago Style
GROLIER Academic Encyclopedia, volume 21 :.
.
[s.n]:
Grolier International,
1991.
Buku.
MLA Style
GROLIER Academic Encyclopedia, volume 21 :.
.
[s.n]:
Grolier International,
1991.
Buku.
Turabian Style
GROLIER Academic Encyclopedia, volume 21 :.
[s.n]:
Grolier International,
1991.
Buku.