USDA, NRCS (n.d.). "Samolus valerandi". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 28 October 2015.
worldcat.org
Ḳrispil, Nissim (1987). Amos Shapira (ed.). A Bag of Plants (The Useful Plants of Israel) (Yalḳuṭ ha-tsemaḥim) (in Hebrew). Vol. 4 (N.-Ṣ.). Jerusalem: Ya'arah Publishing House Ltd. pp. 990–993. OCLC21934597., s.v. Samolus valerandi