Gaya APA
Incorporated, G. (1988).
The The Encyclopedia Americana Volume 15: indian to jeffera (Pertama).
Danbury:
Grolier Incorporated.
Gaya MLA
Incorporated, Grolier.
"The The Encyclopedia Americana Volume 15: indian to jeffera".
Pertama
Danbury:
Grolier Incorporated,
1988.
Text.