Gaya APA
Robinson, Romney. (1980).
Economics (text).
New York:
McGraw Hill Book Company.
Gaya Chicago
Robinson, Romney.
Economics.
text
New York:
McGraw Hill Book Company,
1980.
Tesis.
Gaya MLA
Robinson, Romney.
Economics.
text
New York:
McGraw Hill Book Company,
1980.
Tesis.
Gaya Turabian
Robinson, Romney.
Economics.
text
New York:
McGraw Hill Book Company,
1980.
Tesis.