https://library.anau.am/images/stories/grqer/hasarak/sociologia-kravchenko.pd
https://library.anau.am/images/stories/grqer/hasarak/Kyurehyan.pdf
https://library.anau.am/images/stories/grqer/Tntesagitakan/socialakan%20kan.pdf
https://library.anau.am/images/stories/grqer/hasarak/shestak_o_i_andreeva_o_n_sociologiya.pdf