@Article{600966,
     author = "Oksana Synekop",
     title = "Retrospective Analysis of Studies on Differentiated Instruction of English for Specific Purposes ",
     year =  2017,
     volume =  ,
     number =  4(22),
     journal =  Edukacja - Technika - Informatyka,
     pages =  s. 103-107,
    }