(2018). . , 4(1), 69-76. doi: 10.22059/poll.2017.236692.290
. "". , 4, 1, 2018, 69-76. doi: 10.22059/poll.2017.236692.290
(2018). '', , 4(1), pp. 69-76. doi: 10.22059/poll.2017.236692.290
. , 2018; 4(1): 69-76. doi: 10.22059/poll.2017.236692.290


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