Gaya APA
Ferguson, John H.. (1961).
The american federal goverment .
New York:
McGraw-Hill Company.
Gaya Chicago
Ferguson, John H..
The american federal goverment.
New York:
McGraw-Hill Company,
1961.
Tesis.
Gaya MLA
Ferguson, John H..
The american federal goverment.
New York:
McGraw-Hill Company,
1961.
Tesis.
Gaya Turabian
Ferguson, John H..
The american federal goverment.
New York:
McGraw-Hill Company,
1961.
Tesis.