Gaya APA

Kelsen, H., Sidharta, B, A. (2013). Hans kelsen essays in legal and moral philosophy= hukum dan logika (1). Bandung: Alumni.

Gaya MLA

Kelsen, Hans., Sidharta, B., Arief. "Hans kelsen essays in legal and moral philosophy= hukum dan logika". 1 Bandung: Alumni, 2013. Text.