Duka, I., S. Shallari, A. Maçi, Z. Rada, and J. Shehu. “Heavy Metals Accumulation by Aromatic Plant Salvia Officinalis Irrigated With Treated Wastewater”. ANGLISTICUM. Journal of the Association-Institute for English Language and American Studies, vol. 4, no. 10, Dec. 2016, pp. 86-92, https://www.anglisticum.org.mk/index.php/IJLLIS/article/view/1185.