Gaya APA
Somantri, L., Huda, N.
(2011).
Advanced Learning Geography 2
.
Bandung:
Grafindo Media Pratama.
Gaya MLA
Somantri, Lili., Huda, Nurul.
"Advanced Learning Geography 2".
Bandung:
Grafindo Media Pratama,
2011.
Text.