1. Plant-Derived Natural Products in Drug Discovery and Development
2. Tackholm, V. (1974). Students Flora of Egypt. 2nd Edition, The Cooperative Printing Company, Cairo, Egypt, 170–171.
3. Boulos, L. (1999). Flora of Egypt Check list. Al Hadara Publishing Co. Cairo, Egypt, 419–420.
4. Rizk, A. M. (1986). The Phytochemistry of the Flora of Qatar. Scientific and Applied Research Center Univ. Qatar, 582–583.