1. E.Nasir, and S.I.Ali, Flora of West Pakistan (Fakhri Printing Press, Karachi, 1971), pp. 1–10.
2. S.R.Baquar, Medicinal and Poisonous Plants of Pakistan (Printas Press, Karachi, 1989), p. 161.
3. H.E.Connor, The Poisonous Plants in New Zealand (E. C. Keating, Government Printer, Wellington, 1977), p. 172.
4. Coumarins from Daphne retusa