"AGM Plants - Ornamental"(PDF). Royal Horticultural Society. July 2017. p. 93. Retrieved 11 October 2018.
usda.gov
plants.sc.egov.usda.gov
USDA, NRCS (n.d.). "Salix gracilistyla". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 27 October 2015.