APA

European Cooperative Programme for Crop Genetic Resources Networks, . (1991). Guide to European Forage Databases. Italia: International Board for Plant Genetic Resources.

Chicago

European Cooperative Programme for Crop Genetic Resources Networks, . 1991. Guide to European Forage Databases. Italia: International Board for Plant Genetic Resources.

Harvard

European Cooperative Programme for Crop Genetic Resources Networks, . (1991). Guide to European Forage Databases. Italia: International Board for Plant Genetic Resources.

MLA

European Cooperative Programme for Crop Genetic Resources Networks, . Guide to European Forage Databases. Italia: International Board for Plant Genetic Resources. 1991.