Bakht, Jehan, Rafi Ullah, and Mohammad Shafi. “Effect of Chelator EDTA on Phyto-Remediation of Cadmium, Chromium and Lead and Their Effect on Growth of Sunflower (Helianthus Annuus L.): Effect of Metals on Growth of Sunflower”. Biological Sciences - PJSIR 63, no. 1 (March 18, 2020): 22–29. Accessed March 28, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/1216.