APA (7th ed.) Citation

Cullet, P., & Gowlland-Gualtieri, A. (2004). Key materials in international environmental law. Ashgate.

Chicago Style (17th ed.) Citation

Cullet, Philippe, and Alix Gowlland-Gualtieri. Key Materials in International Environmental Law. Aldershot, England: Ashgate, 2004.

MLA (9th ed.) Citation

Cullet, Philippe, and Alix Gowlland-Gualtieri. Key Materials in International Environmental Law. Ashgate, 2004.