APA

Kelsen Hans,, . (1967). Pure theory of law. Berkeley: University Of California Press.

Chicago

Kelsen Hans,, . 1967. Pure theory of law. Berkeley: University Of California Press.

Harvard

Kelsen Hans,, . (1967). Pure theory of law. Berkeley: University Of California Press.

MLA

Kelsen Hans,, . Pure theory of law. Berkeley: University Of California Press. 1967.