Cita APA (7th ed.)

Case, D., Davey, J., & Milne, J. (1982). Developing writing skills in english: Workbook. Heinemann Educational Books.

Cita Chicago (17th ed.)

Case, Dough, John Davey, i John Milne. Developing Writing Skills in English: Workbook. Londres: Heinemann Educational Books, 1982.

Cita MLA (9th ed.)

Case, Dough, et al. Developing Writing Skills in English: Workbook. Heinemann Educational Books, 1982.