Gaya APA
Ruffin, Roy J., Paul R. Gregory. (1988).
Principles Of Microeconomics (3rd ed.).
Illinois:
Scott, Foresman and Company.
Gaya Chicago
Ruffin, Roy J., Paul R. Gregory.
Principles Of Microeconomics.
3rd ed.
Illinois:
Scott, Foresman and Company,
1988.
Text.
Gaya MLA
Ruffin, Roy J., Paul R. Gregory.
Principles Of Microeconomics.
3rd ed.
Illinois:
Scott, Foresman and Company,
1988.
Text.
Gaya Turabian
Ruffin, Roy J., Paul R. Gregory.
Principles Of Microeconomics.
3rd ed.
Illinois:
Scott, Foresman and Company,
1988.
Print.