APA

Hughes G. . J. M. . T. R., .Practical Classroom English. New York:OXFORD UNIVARSITY PRESS,2007: .

Chicago

Hughes Glyn Josephine Moate Tiina Raatikainen, .Practical Classroom English. New York:OXFORD UNIVARSITY PRESS,2007: .

Harvard

Hughes G. . J. M. . T. R., .Practical Classroom English. New York:OXFORD UNIVARSITY PRESS,2007: .

MLA

Hughes Glyn Josephine Moate Tiina Raatikainen, .New York:OXFORD UNIVARSITY PRESS,2007: . .