Gaya APA
Sintriana, I.
(1983).
Grolier Academic Encyclopedia 20: W-X-Y-Z
.
Danbury, Conn:
Grolier International.
Gaya MLA
Sintriana, Irin.
"Grolier Academic Encyclopedia 20: W-X-Y-Z".
Danbury, Conn:
Grolier International,
1983.
Text.