Gaya APA
Petterson, Thomas E.. (2008).
The American democracy .
New York:
McGraaw Hill.
Gaya Chicago
Petterson, Thomas E..
The American democracy.
New York:
McGraaw Hill,
2008.
Textbook.
Gaya MLA
Petterson, Thomas E..
The American democracy.
New York:
McGraaw Hill,
2008.
Textbook.
Gaya Turabian
Petterson, Thomas E..
The American democracy.
New York:
McGraaw Hill,
2008.
Textbook.