Pycnanthemum virginianum T.Durand et B.D.Jacks. ex B.L.Rob. et Fernald . Botaanika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//bot/Pycnanthemum%20virginianum%20T.Durand%20et%20B.D.Jacks.%20ex%20B.L.Rob.%20et%20Fernald/1/lat (06.08.2026)
