Gaya APA
DiLeo, W., Towers, V, F. (1993).
THE AMERICANA ANNUAL 1993 (1).
Americana Corporation, New Yor:
Grolier Incorporated.
Gaya MLA
DiLeo, Warren., Towers, Veronica, F..
"THE AMERICANA ANNUAL 1993".
1
Americana Corporation, New Yor:
Grolier Incorporated,
1993.
Ensiklopedi.