Gaya APA
Grolier, I.
(2001).
The New Book Of Knowledge Volume 6 (Trawas)
.
Danbury:
Grolier Incorporated.
Gaya MLA
Grolier, Incorporated.
"The New Book Of Knowledge Volume 6 (Trawas)".
Danbury:
Grolier Incorporated,
2001.
Text.