Gaya APA
Kelsen, Hans. (1996).
Introduction to the problems of legal theory .
New York:
Oxford.
Gaya Chicago
Kelsen, Hans.
Introduction to the problems of legal theory.
New York:
Oxford,
1996.
Text.
Gaya MLA
Kelsen, Hans.
Introduction to the problems of legal theory.
New York:
Oxford,
1996.
Text.
Gaya Turabian
Kelsen, Hans.
Introduction to the problems of legal theory.
New York:
Oxford,
1996.
Print.