Morus im Germplasm Resources Information Network (GRIN), USDA, ARS, National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
google.sk
books.google.sk
K. Kristbergsson, S. Ötles: Functional Properties of Traditional Foods. Springer, 2016, ISBN 978-1-4899-7662-8, S.211 (englisch, google.sk).