Gaya APA
Hollad, J.
(2001).
The Grolier Science Ensiklopedia: Space and Time
(
9)
.
Hongkong:
Groiler.
Gaya MLA
Hollad, Julian.
"The Grolier Science Ensiklopedia: Space and Time".
9
Hongkong:
Groiler,
2001.
Text.