Jeya Daisey, K., Santrin Sabibha, R., Jeyanthi, P. and Youssef, M.Z. 2022. k-Product Cordial Behaviour of Union of Graphs. Journal of the Indonesian Mathematical Society. 28, 1 (Mar. 2022), 1–7. DOI:https://doi.org/10.22342/jims.28.1.1025.1-7.