APA

Guzmán A. T., . (2008). How international law works. New York: Oxford University Press.

Chicago

Guzmán Andrew T, . 2008. How international law works. New York: Oxford University Press.

Harvard

Guzmán A. T., . (2008). How international law works. New York: Oxford University Press.

MLA

Guzmán Andrew T, . How international law works. New York: Oxford University Press. 2008.