APA

(2000). Iucn- The World Conservation Union : Commission On Environmetal Law. Germany: IUCN.

Chicago

2000. Iucn- The World Conservation Union : Commission On Environmetal Law. Germany: IUCN.

Harvard

(2000). Iucn- The World Conservation Union : Commission On Environmetal Law. Germany: IUCN.

MLA

Iucn- The World Conservation Union : Commission On Environmetal Law. Germany: IUCN. 2000.