Xavier, C. (2017). Responding First as a Leading Power. test, 1(2), 36-39. doi: 10.21608/sis.2018.192255
Constantino Xavier. "Responding First as a Leading Power". test, 1, 2, 2017, 36-39. doi: 10.21608/sis.2018.192255
Xavier, C. (2017). 'Responding First as a Leading Power', test, 1(2), pp. 36-39. doi: 10.21608/sis.2018.192255
Xavier, C. Responding First as a Leading Power. test, 2017; 1(2): 36-39. doi: 10.21608/sis.2018.192255