Bin Shahna, A. (2011). Pre - θ – perfect mappings and p- closed spaces. test, 35(1), 25-29. doi: 10.21608/djs.2011.149673
Abdulla Salem Bin Shahna. "Pre - θ – perfect mappings and p- closed spaces". test, 35, 1, 2011, 25-29. doi: 10.21608/djs.2011.149673
Bin Shahna, A. (2011). 'Pre - θ – perfect mappings and p- closed spaces', test, 35(1), pp. 25-29. doi: 10.21608/djs.2011.149673
Bin Shahna, A. Pre - θ – perfect mappings and p- closed spaces. test, 2011; 35(1): 25-29. doi: 10.21608/djs.2011.149673