Razemba, Fadzai, et al. “Convergent Validity of the Occupational Therapy Adult Perceptual Screening Test (OT-APST) With Two Other Cognitive-Perceptual Tools in a South African Context”. South African Journal of Occupational Therapy, vol. 47, no. 2, Aug. 2017, pp. 3-10, https://doi.org/10.17159/2310-3833/2017/v47n2a2.