Saeed, R., M. Qasim, I. Mahmood, and W. Akhtar. “FACTORS AFFECTING WHEAT YIELD VARIATION OF SMALLHOLDER FARMERS IN PUNJAB PROVINCE: APPLICATION OF ORDERED LOGISTIC MODEL”. Pakistan Journal of Agriculture, Agricultural Engineering and Veterinary Sciences 37, no. 2 (December 20, 2021): 126–131. Accessed December 1, 2023. https://pjaaevs.sau.edu.pk/index.php/ojs/article/view/508.