Reem Sabbobeh, Hatem Hejaz, Hashem Al-Jaas, Ali Jahajha, and Saleh Abu-Lafi, “Phytochemical Analysis of Cultivated and Wild Salvia Palaestina using GC-MS: A comparative study”, World J Pharm Sci, vol. 3, no. 12, pp. 2348–2356, Dec. 2015.