APA (7th ed.) Citation

(2001). The environment encyclopedia and directory 2001 (3. ed.). Europa Publ.

Chicago Style (17th ed.) Citation

The Environment Encyclopedia and Directory 2001. 3. ed. London: Europa Publ, 2001.

MLA (9th ed.) Citation

The Environment Encyclopedia and Directory 2001. 3. ed. Europa Publ, 2001.