Jamal Abdul Nasir and M. H. Tahir, “Comments on Estimating Income Variances by Probability Sampling: A Case Study by Shah and Aleem”, JESPK, vol. 6, no. 1, pp. 131–132, Mar. 2012, Accessed: Aug. 14, 2026. [Online]. Available: https://jes.ac.pk/index.php/jes/article/view/592