APA
Fawcett J E S,, . (1971). The law of nations. Middlesex: Penguin Books.
Chicago
Fawcett J E S,, . 1971. The law of nations. Middlesex: Penguin Books.
Harvard
Fawcett J E S,, . (1971). The law of nations. Middlesex: Penguin Books.
MLA
Fawcett J E S,, . The law of nations. Middlesex: Penguin Books. 1971.