Gaya APA
Case, Karl E.. (2002).
Principles of economics .
New Jersey:
Prentice Hall.
Gaya Chicago
Case, Karl E..
Principles of economics.
New Jersey:
Prentice Hall,
2002.
Tesis.
Gaya MLA
Case, Karl E..
Principles of economics.
New Jersey:
Prentice Hall,
2002.
Tesis.
Gaya Turabian
Case, Karl E..
Principles of economics.
New Jersey:
Prentice Hall,
2002.
Tesis.