APA

Inglaterra, Irlanda Department of the Environment, Joint Nature Conservation Committee, Inglaterra National Assembly for Wales, Plantlife International, Royal Botanic Gardens & Scottish Executive Environment and Rural Affais Department. (2004). Plant diversity challenge. Peterborough (Australia): Joint Nature Conservation Committee.

Chicago

Inglaterra, Irlanda Department of the Environment, Joint Nature Conservation Committee, Inglaterra National Assembly for Wales, Plantlife International, Royal Botanic Gardens and Scottish Executive Environment and Rural Affais Department. 2004. Plant diversity challenge. Peterborough (Australia): Joint Nature Conservation Committee.

Harvard

Inglaterra, Irlanda Department of the Environment, Joint Nature Conservation Committee, Inglaterra National Assembly for Wales, Plantlife International, Royal Botanic Gardens and Scottish Executive Environment and Rural Affais Department. (2004). Plant diversity challenge. Peterborough (Australia): Joint Nature Conservation Committee.

MLA

Inglaterra, Irlanda Department of the Environment, Joint Nature Conservation Committee, Inglaterra National Assembly for Wales, Plantlife International, Royal Botanic Gardens and Scottish Executive Environment and Rural Affais Department. Plant diversity challenge. Peterborough (Australia): Joint Nature Conservation Committee. 2004.