APA

Gran Bretaña, .Convention on Wetlands of International Importance especially as waterfowl habitat, Ramsar, 2 February 1971, as amended by the Paris Protocol of 3 December 1982, with amendments to articles 6 and 7 of the convention adopted at the extraordinary conference of the contracting parties at regina, Canada, 28 May to 3 June 1987. : .

Chicago

Gran Bretaña, .Convention on Wetlands of International Importance especially as waterfowl habitat, Ramsar, 2 February 1971, as amended by the Paris Protocol of 3 December 1982, with amendments to articles 6 and 7 of the convention adopted at the extraordinary conference of the contracting parties at regina, Canada, 28 May to 3 June 1987. : .

Harvard

Gran Bretaña, .Convention on Wetlands of International Importance especially as waterfowl habitat, Ramsar, 2 February 1971, as amended by the Paris Protocol of 3 December 1982, with amendments to articles 6 and 7 of the convention adopted at the extraordinary conference of the contracting parties at regina, Canada, 28 May to 3 June 1987. : .

MLA

Gran Bretaña, .: . .