Gaya APA
Keever, S, M.
(1993).
ENSIKLOPEDIA SAINS Jilid 4
.
Jakarta:
PT. Aries Lima Jakarta.
Gaya MLA
Keever, Susan, Mc.
"ENSIKLOPEDIA SAINS Jilid 4".
Jakarta:
PT. Aries Lima Jakarta,
1993.
Text.