Ullah, Ghazanfar, Ejaz Ahmed Khan, Inayat Ullah Awan, Muhammed Ayyaz Khan, Abdul Aziz Khakwani, Muhammed Safdar Baloch, Qudrat Ullah Khan, et al. “Wheat Response to Application Methods and Levels of Nitrogen Fertilizer: I. Phenology, Growth Indices and Protein Content”. Pakistan Journal of Nutrition 12, no. 4 (March 15, 2013): 365–370. Accessed August 19, 2025. https://pjnonline.org/pjn/article/view/1831.