Lilianto, Gandhung, Nur Dewi, and Nana Tri Martuti. 2018. “Kandungan Timbal, Debu Di Udara Dan Daun Tanaman Peneduh Di Kota Semarang”. Life Science 7 (2), 47-55. https://journal.unnes.ac.id/sju/UnnesJLifeSci/article/view/26965.