Hayati, Nur Dwi, 		Fadillatulnisa, Fadillatulnisa, AND 		Mayora, Nada Zulmy.
" Utilization of Bromelin Enzyme Extracts in Leather and Pineapple Tube (Ananas comosus L. Merr) As A Latex" <em>International Journal of Environmental Research &amp; Clean Energy</em> [Online], Volume 12 Number 1 (5 November 2018)