Norshahira, O. et al. 2021. Content Validity Determination of the Suicidal Ideation Behaviour Assessment Instruments Using Content Validity Ratio (CVR) Formula: SUICIDAL IDEATION BEHAVIOUR ASSESSMENT. Journal of Drug Delivery and Therapeutics. 11, 4-S (Aug. 2021), 81–85. DOI:https://doi.org/10.22270/jddt.v11i4-S.4968.