Mohamed Zain, S. H., S. R. Mohd Arifin, H. H. Mokhtar, M. S. Nurumal, and M. Che’ Man. “Designing Spouse-Based Educational Intervention to Reduce Second-Hand Smoke For Pregnant Women: A Study Protocol For Randomized Control Trial”. INTERNATIONAL JOURNAL OF CARE SCHOLARS, vol. 5, no. 2, July 2022, pp. 12-19, doi:10.31436/ijcs.v5i2.228.