Limbong, Y. et al. 2021. KANDUNGAN BEBERAPA POLUTAN DAN KADAR DEBU PADA DAUN KETAPANG (Terminalia catappa L.) DI KOTA SAMARINDA PROVINSI KALIMANTAN TIMUR: The Pollutant and Dust Contents in the Leaves of Terminalia catappa L. in Samarinda City East Kalimantan Province. PERENNIAL. 17, 2 (Nov. 2021), 55–61. DOI:https://doi.org/10.24259/perennial.v17i2.13965.