????????, Pyce????, ??? . 1980. ???????? ???????????? ????????? ?. ??????????. ?????????????? ??????????? / ???????????????? ??????????? / Contrastive linguistics 5. (?????????????? ??????????? / ???????????????? ??????????? / Contrastive Linguistics). 81?82.

????????, Pyce????, ??? . 1979. ????? ????????????? ???????-?????? ??????????? ? ???????. ?????????????? ??????????? / ???????????????? ??????????? / Contrastive linguistics 4. (?????????????? ??????????? / ???????????????? ??????????? / Contrastive Linguistics). 85?86.