Gaya APA
Drs. Alam S., MM. (2011).
Economics 2B for Senior High School (Grade XI Semester 2) .
JAKARTA:
Esis.
Gaya Chicago
Drs. Alam S., MM.
Economics 2B for Senior High School (Grade XI Semester 2).
JAKARTA:
Esis,
2011.
Text.
Gaya MLA
Drs. Alam S., MM.
Economics 2B for Senior High School (Grade XI Semester 2).
JAKARTA:
Esis,
2011.
Text.
Gaya Turabian
Drs. Alam S., MM.
Economics 2B for Senior High School (Grade XI Semester 2).
JAKARTA:
Esis,
2011.
Print.