Gaya APA
Purbodiningrat, ., purbodiningrat, G.
(1993).
Ensiklopedia sains
(
Cet.1)
.
GREAT BRITAN:
PT ARIES LIMA JAKARTA.
Gaya MLA
Purbodiningrat, ., purbodiningrat, Geino.
"Ensiklopedia sains".
Cet.1
GREAT BRITAN:
PT ARIES LIMA JAKARTA,
1993.
Text.