APA

Vecchio Georgio Del,, . (1969). The formal bases of law. New York: Augustin M Kelley.

Chicago

Vecchio Georgio Del,, . 1969. The formal bases of law. New York: Augustin M Kelley.

Harvard

Vecchio Georgio Del,, . (1969). The formal bases of law. New York: Augustin M Kelley.

MLA

Vecchio Georgio Del,, . The formal bases of law. New York: Augustin M Kelley. 1969.