APA

Friedmann Wolfgang,, . (1966). The changing structure of international law. New York: Columbia University.

Chicago

Friedmann Wolfgang,, . 1966. The changing structure of international law. New York: Columbia University.

Harvard

Friedmann Wolfgang,, . (1966). The changing structure of international law. New York: Columbia University.

MLA

Friedmann Wolfgang,, . The changing structure of international law. New York: Columbia University. 1966.