KHALID, Umer Bin; SHAHBAZ, Pomi; HAQ, Shamsheer Ul; JAVEED, Sikandar. Economic Analysis of Integrated Farming Systems on Farm Income. A case Study of Sahiwal District, Punjab, Pakistan. International Journal Of Management And Economics Invention, [S. l.], v. 3, n. 11, p. 1434–1444, 2017. Disponível em: http://www.rajournals.in/index.php/ijmei/article/view/168. Acesso em: 7 may. 2024.