"Vitis International Variety Catalogue". Information and Coordination Centre for Biological Diversity (IBV) of the Federal Agency for Agriculture and Food (BLE), Deichmanns Aue 29, 53179 Bonn, Germany. June 1999. 11 Nisan 2007 tarihinde kaynağından arşivlendi. Erişim tarihi: 22 Nisan 2007.
"Vitis International Variety Catalogue". Information and Coordination Centre for Biological Diversity (IBV) of the Federal Agency for Agriculture and Food (BLE), Deichmanns Aue 29, 53179 Bonn, Germany. June 1999. 11 Nisan 2007 tarihinde kaynağından arşivlendi. Erişim tarihi: 22 Nisan 2007.