Case, D., & Milne, J. (1982). Developing writing skills in english: Students' book. Heinemann Educational Books.
Chicago Style (17th ed.) CitationCase, Dough, and John Milne. Developing Writing Skills in English: Students' Book. Londres: Heinemann Educational Books, 1982.
MLA (9th ed.) CitationCase, Dough, and John Milne. Developing Writing Skills in English: Students' Book. Heinemann Educational Books, 1982.
Warning: These citations may not always be 100% accurate.