Gaya APA
Incorporated, G. (1988).
The Encyclopedia Americana Volume 23: Pumps to Russell (Pertama).
Danbury:
Grolier Incorporated.
Gaya MLA
Incorporated, Grolier.
"The Encyclopedia Americana Volume 23: Pumps to Russell".
Pertama
Danbury:
Grolier Incorporated,
1988.
Text.