????????, ??????. 2009. ???????????? ?? ????????? ?? ????? ?????????. ?????????????? ??????????? / ???????????????? ??????????? / Contrastive linguistics 34. (?????????????? ??????????? / ???????????????? ??????????? / Contrastive Linguistics). 128?132.

??????????, ?????? & ??????  ????????. 2008. ???????????? ?? ????????? ?? ?????? ?????????. ?????????????? ??????????? / ???????????????? ??????????? / Contrastive linguistics 33. (?????????????? ??????????? / ???????????????? ??????????? / Contrastive Linguistics). 119?124.

????????, ??????. 1982. ???????????? ?? ????????? ?? ????. ???? ??????? (1973?1981). ?????????????? ??????????? / ???????????????? ??????????? / Contrastive linguistics 7. (?????????????? ??????????? / ???????????????? ??????????? / Contrastive Linguistics). 59?60.