Gaya APA
Retnowati, E. et al (2012).
Learning more Mathematics 1B for Grade VII junior high school .
Bandung:
Grafindo Media pratama.
Gaya MLA
Retnowati, Endah. et al.
"Learning more Mathematics 1B for Grade VII junior high school".
Bandung:
Grafindo Media pratama,
2012.
Text.