Awadh, A. I., Hassali, M. A., Al-lela, O. Q., Bux, S. H., Elkalmi, R. M., & Hadi, H. (2014). Immunization knowledge and practice among Malaysian parents: A questionnaire development and pilot-testing. BMC Public Health.

Awadh, Ammar Ihsan, Mohamed Azmi Hassali, Omer Qutaiba Al-lela, Siti Halimah Bux, Ramadan M. Elkalmi, و Hazrina Hadi. "Immunization Knowledge and Practice Among Malaysian Parents: A Questionnaire Development and Pilot-testing." BMC Public Health 2014.

Awadh, Ammar Ihsan, et al. "Immunization Knowledge and Practice Among Malaysian Parents: A Questionnaire Development and Pilot-testing." BMC Public Health 2014.