Noor Amira Syazwani Abd Rahman, Jamal Rizal Razali, M. R. RIDZUAN, and Soon Yew. “A COMPARATIVE STUDY ON CHILDHOOD VACCINATION POLICY IN THE UNITED STATES, AUSTRALIA, EUROPE AND MALAYSIA”. International Journal of Humanities Technology and Civilization, vol. 7, no. 1, June 2022, pp. 92-96, doi:10.15282/ijhtc.v7i1.7613.