Gaya APA
Politieke encyclopedie. (1949).
London:
Oxford.
Gaya Chicago
Politieke encyclopedie.
.
London:
Oxford,
1949.
Text.
Gaya MLA
Politieke encyclopedie.
.
London:
Oxford,
1949.
Text.
Gaya Turabian
Politieke encyclopedie.
London:
Oxford,
1949.
Print.