APA
Federal Environmental Ministry, . (1998). 1998 Report on the environment. [s.l.]: Federal Ministry for the Environment, Nature Consrvation and Nuclear Safety.
Chicago
Federal Environmental Ministry, . 1998. 1998 Report on the environment. [s.l.]: Federal Ministry for the Environment, Nature Consrvation and Nuclear Safety.
Harvard
Federal Environmental Ministry, . (1998). 1998 Report on the environment. [s.l.]: Federal Ministry for the Environment, Nature Consrvation and Nuclear Safety.
MLA
Federal Environmental Ministry, . 1998 Report on the environment. [s.l.]: Federal Ministry for the Environment, Nature Consrvation and Nuclear Safety. 1998.