yazdani, N. and jahan khaani, A. (1995). The effects of industry, size, business risk and companies performance degree at The use of financial leverage in companies that accepted in Tehran Stock Exchange. Management Studies in Development and Evolution, 5(17.18), 169-186.

yazdani, N. , and jahan khaani, A. . "The effects of industry, size, business risk and companies performance degree at The use of financial leverage in companies that accepted in Tehran Stock Exchange", Management Studies in Development and Evolution, 5, 17.18, 1995, 169-186.

yazdani, N., jahan khaani, A. (1995). 'The effects of industry, size, business risk and companies performance degree at The use of financial leverage in companies that accepted in Tehran Stock Exchange', Management Studies in Development and Evolution, 5(17.18), pp. 169-186.

N. yazdani and A. jahan khaani, "The effects of industry, size, business risk and companies performance degree at The use of financial leverage in companies that accepted in Tehran Stock Exchange," Management Studies in Development and Evolution, 5 17.18 (1995): 169-186,

yazdani, N., jahan khaani, A. The effects of industry, size, business risk and companies performance degree at The use of financial leverage in companies that accepted in Tehran Stock Exchange. Management Studies in Development and Evolution, 1995; 5(17.18): 169-186.