Gaya APA
Saefulloh, A.
(2008).
Ensiklopedia IPS Alam Nusantara
.
Jakarta:
Ganeca Exact.
Gaya MLA
Saefulloh, Aep.
"Ensiklopedia IPS Alam Nusantara".
Jakarta:
Ganeca Exact,
2008.
Reference.