Halim, Norsuhana, Radiah Abdul Ghani, Adzly Hairee Sahabudin, and Fiona How Ni Fong. 2017. “An Investigation on Cytotoxicity Effect of Putrescine-Sulphur Analogues on Breast Cancer (Mcf-7), Human Lung Adenocarcinoma (A549) and Colorectal Cancer (Hct-8) Cell Lines”. IIUM Medical Journal Malaysia 16 (1). https://doi.org/10.31436/imjm.v16i1.1135.