Gaya APA
Frank, Robert H.. (2007).
Principles of economics (ed. 3).
New York:
McGraaw Hill.
Gaya Chicago
Frank, Robert H..
Principles of economics.
ed. 3
New York:
McGraaw Hill,
2007.
Textbook.
Gaya MLA
Frank, Robert H..
Principles of economics.
ed. 3
New York:
McGraaw Hill,
2007.
Textbook.
Gaya Turabian
Frank, Robert H..
Principles of economics.
ed. 3
New York:
McGraaw Hill,
2007.
Textbook.