Putra, Alris, 		Munir, Rahmawati, AND 		Natalisanto, Adrianus.
" Studi Adsorpsi Logam Berat Besi (Fe) dan Timbal (Pb) Air Sungai Mahakam oleh Limbah Cangkang Telur dan Abu Gosok" <em>Progressive Physics Journal</em> [Online], Volume 3 Number 2 (9 December 2022)