European Cooperative Programme For Crop Genetic Resources Networks & International Board for Plant Genetic Resources. (1993). Report of a working group on forages (fourth meeting) held in Budapest, Hungary 28-30 October 1991. IBPGR.
Chicago-referens (17:e uppl.)European Cooperative Programme For Crop Genetic Resources Networks och International Board for Plant Genetic Resources. Report of a Working Group on Forages (fourth Meeting) Held in Budapest, Hungary 28-30 October 1991. Rome: IBPGR, 1993.
MLA-referens (8:e uppl.)European Cooperative Programme For Crop Genetic Resources Networks och International Board for Plant Genetic Resources. Report of a Working Group on Forages (fourth Meeting) Held in Budapest, Hungary 28-30 October 1991. IBPGR, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.