Case, D., Davey, J., & Milne, J. (1982). Developing writing skills in english: Workbook. Heinemann Educational Books.
Citace podle Chicago (17th ed.)Case, Dough, John Davey, a John Milne. Developing Writing Skills in English: Workbook. Londres: Heinemann Educational Books, 1982.
Citace podle MLA (9th ed.)Case, Dough, et al. Developing Writing Skills in English: Workbook. Heinemann Educational Books, 1982.
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