Zahro, Aminahtuz, 		Mufaridho, Lailatul, AND 		Alisah, Evawati.
" The Description of Fuzzy Sets Operations in Lattice Theory" <em>Prosiding SI MaNIs (Seminar Nasional Integrasi Matematika dan Nilai-Nilai Islami)</em> [Online], Volume 3 Number 1 (13 February 2020)