Gaya APA
Firmansyah, H. (2015).
Advanced Learning Economics 1 for Grade X Senior High School .
Bandung:
Grafindo Media Pratama.
Gaya MLA
Firmansyah, Herlan.
"Advanced Learning Economics 1 for Grade X Senior High School".
Bandung:
Grafindo Media Pratama,
2015.
Ekonomi.