Dalawi, Izzaty, et al. “The Agreement Between State-Trait-Anxiety-Inventory (STAI) and Beck Anxiety Inventory (BAI) on Measuring Anxiety Level Among Adult Patients Before Venepuncture Procedure”. International Journal of Human and Health Sciences (IJHHS), vol. 6, Mar. 2022, p. S38, doi:10.31344/ijhhs.v6i0.428.