Gaya APA
Case, Karl E, Fair, Ray C. (2004).
Principles of economics (7e).
New Jersey:
Pearson Education.
Gaya Chicago
Case, Karl E, Fair, Ray C.
Principles of economics.
7e
New Jersey:
Pearson Education,
2004.
Buku.
Gaya MLA
Case, Karl E, Fair, Ray C.
Principles of economics.
7e
New Jersey:
Pearson Education,
2004.
Buku.
Gaya Turabian
Case, Karl E, Fair, Ray C.
Principles of economics.
7e
New Jersey:
Pearson Education,
2004.
Buku.