Gaya APA
Schoerder , Richard. (1989).
AMERICAN GOVERMENT .
America:
PT USA.
Gaya Chicago
Schoerder , Richard.
AMERICAN GOVERMENT.
America:
PT USA,
1989.
Text.
Gaya MLA
Schoerder , Richard.
AMERICAN GOVERMENT.
America:
PT USA,
1989.
Text.
Gaya Turabian
Schoerder , Richard.
AMERICAN GOVERMENT.
America:
PT USA,
1989.
Print.