https://bphn.go.id/data/documents/kerusakan_tanah.pdf
Paragraf 2 (Permasalahan)
(“Degradasi lahan dan isu lingkungan”, 2012) http://repository.pertanian.go.id/bitstream/handle/123456789/7048/bab%20VII%20degradasi%20lahan%20dan%20isu%20lingkungan.pdf?sequence=1&isAllowed=y
(Dr Abdurachman Adi, 2012) https://www.litbang.pertanian.go.id/artikel.php/19/pdf/Degradasi%20Tanah%20Pertanian%20Indonesia.pdf
(Wage Komorawidjaja, 2017) https://media.neliti.com/media/publications/159202-ID-paparan-limbah-cair-industri-mengandung.pdf.
(S. Sukmaning, 2008) http://repository.ut.ac.id/7289/1/L0031_18.pdf
(“Mengenal logam Berat”, 2000) http://sib3pop.menlhk.go.id/index.php/articles/view?slug=mengenal-logam-berat
Paragraf 3 (Dampak)
(Greenpeace, 2016) https://www.greenpeace.org/static/planet4-indonesia-stateless/2019/02/5a4dff4e-5a4dff4e-laporan-melawan-limbah.pdf.
(H. Baihaqi, 2019) https://jabar.tribunnews.com/2019/06/27/sungai-lain-sudah-tercemar-warga-pun-mencari-ikan-di-lokasi-proyek-normalisasi-sungai-cikijing. Sungai Lain Sudah Tercemar, Warga Pun Mencari Ikan di Lokasi Proyek Normalisasi Sungai Cikijing