APA
Ministry of Environment & parliamentary Affairs, . (1991). National Environmental action Plan 1992 -1996. : Ministry of Environment & parliamentary Affairs.
Chicago
Ministry of Environment & parliamentary Affairs, . 1991. National Environmental action Plan 1992 -1996. : Ministry of Environment & parliamentary Affairs.
Harvard
Ministry of Environment & parliamentary Affairs, . (1991). National Environmental action Plan 1992 -1996. : Ministry of Environment & parliamentary Affairs.
MLA
Ministry of Environment & parliamentary Affairs, . National Environmental action Plan 1992 -1996. : Ministry of Environment & parliamentary Affairs. 1991.