Irfan Ullah, Akram Ali, Waheed Ullah, Akhtar Ali, Muhammad Suhail, Ijlal Haider, Iqra Babar. “An Estimation of Expenditures, Own and Cross Price Elasticities of Milk in Pakistan”. International Journal of Modern Agriculture, vol. 10, no. 2, June 2021, pp. 4280 -90, http://modern-journals.com/index.php/ijma/article/view/1326.