Gaya APA
Incorporated, G.
(1973).
The New Book Of Knowledge: jilid 1 A
.
Amerika Serikat:
Grolier Incorporated.
Gaya MLA
Incorporated, Grolier.
"The New Book Of Knowledge: jilid 1 A".
Amerika Serikat:
Grolier Incorporated,
1973.
Text.