APA

Gillespie Alexander,, . (2002). International environmental law policy and ethics. Oxford: Oxford University Press.

Chicago

Gillespie Alexander,, . 2002. International environmental law policy and ethics. Oxford: Oxford University Press.

Harvard

Gillespie Alexander,, . (2002). International environmental law policy and ethics. Oxford: Oxford University Press.

MLA

Gillespie Alexander,, . International environmental law policy and ethics. Oxford: Oxford University Press. 2002.