Gaya APA
ENCYCLOPEDIA AMERICANA 4. (1983).
USA:
Grolier Incorporated.
Gaya Chicago
ENCYCLOPEDIA AMERICANA 4.
.
USA:
Grolier Incorporated,
1983.
REFERENSI.
Gaya MLA
ENCYCLOPEDIA AMERICANA 4.
.
USA:
Grolier Incorporated,
1983.
REFERENSI.
Gaya Turabian
ENCYCLOPEDIA AMERICANA 4.
USA:
Grolier Incorporated,
1983.
REFERENSI.