Gaya APA

Somantri, L. (2014). Advanced learning geography 2 : for grade XI Senior High School = social sciences programme . Bandung: Grafindo Media Pratama.

Gaya MLA

Somantri, Lili. "Advanced learning geography 2 : for grade XI Senior High School = social sciences programme". Bandung: Grafindo Media Pratama, 2014. Text.