APA
Handl Gunther,, . (1992). Year book of the international environmental law. Vol.2 - 1991. London: Graham & Trotman.
Chicago
Handl Gunther,, . 1992. Year book of the international environmental law. Vol.2 - 1991. London: Graham & Trotman.
Harvard
Handl Gunther,, . (1992). Year book of the international environmental law. Vol.2 - 1991. London: Graham & Trotman.
MLA
Handl Gunther,, . Year book of the international environmental law. Vol.2 - 1991. London: Graham & Trotman. 1992.