Gaya APA
Evea, P. et al (2006).
Buku Referensi : Seri Ensiklopedia IPS Mapping the World 2 Observation Measurement .
:
Grolier Educational.
Gaya MLA
Evea, Peter. et al.
"Buku Referensi : Seri Ensiklopedia IPS Mapping the World 2 Observation Measurement".
:
Grolier Educational,
2006.
Text.