APA
Brownlie Ian,, . (1998). Principles of public international law. Oxford: Clarendon Press.
Chicago
Brownlie Ian,, . 1998. Principles of public international law. Oxford: Clarendon Press.
Harvard
Brownlie Ian,, . (1998). Principles of public international law. Oxford: Clarendon Press.
MLA
Brownlie Ian,, . Principles of public international law. Oxford: Clarendon Press. 1998.