Gaya APA
Incorporated, G. (1988).
The Encyclopedia Americana Volume 18: M to Mexico City (Pertama).
Danbury:
Grolier Incorporated.
Gaya MLA
Incorporated, Grolier.
"The Encyclopedia Americana Volume 18: M to Mexico City".
Pertama
Danbury:
Grolier Incorporated,
1988.
Text.