«Genus: Ginkgo L.». Germplasm Resources Information Network (GRIN). United States Department of Agriculture, Agricultural Research Service, Beltsville Area. Arxivat de l'original el 2008-12-20. [Consulta: 26 març 2008]. "Illegal and superfluous name (Vienna ICBN Art. 52) for Ginkgo L."
«Genus: Ginkgo L.». Germplasm Resources Information Network (GRIN). United States Department of Agriculture, Agricultural Research Service, Beltsville Area. Arxivat de l'original el 2008-12-20. [Consulta: 26 març 2008]. "Illegal and superfluous name (Vienna ICBN Art. 52) for Ginkgo L."