Khalid, U. B. (2017) “Economic Analysis of Integrated Farming Systems on Farm Income. A case Study of Sahiwal District, Punjab, Pakistan”, International Journal Of Management And Economics Invention, 3(11), pp. 1434–1444. Available at: http://www.rajournals.in/index.php/ijmei/article/view/168 (Accessed: 7 May 2024).