Julius Kuhn -Institut Bundesforshungsinstitut fur kulturpflanzen. (2009). Proceedings of the 21-st International conference on virus and other graft transmissible diseases of fruit crops: July 5-10, 2009 Neustadt, Germany.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিJulius Kuhn -Institut Bundesforshungsinstitut fur kulturpflanzen. Proceedings of the 21-st International Conference on Virus and Other Graft Transmissible Diseases of Fruit Crops: July 5-10, 2009 Neustadt, Germany. 2009.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিJulius Kuhn -Institut Bundesforshungsinstitut fur kulturpflanzen. Proceedings of the 21-st International Conference on Virus and Other Graft Transmissible Diseases of Fruit Crops: July 5-10, 2009 Neustadt, Germany. 2009.