एपीए उद्धरण

Alexander Gillespie. (2014). International environmental law, policy and ethics (2.). Oxford university press.

शिकागो स्टाइल उद्धरण

Alexander Gillespie. International Environmental Law, Policy and Ethics. 2. UK: Oxford university press, 2014.

एमएलए उद्धरण

Alexander Gillespie. International Environmental Law, Policy and Ethics. 2. Oxford university press, 2014.