Peterson, P. W. (2003). Developing writing: Writing skills practice book for EFL : beginning/intermediate level. United States Department of State.
Chicago-referens (17:e uppl.)Peterson, Patricia Wilcox. Developing Writing: Writing Skills Practice Book for EFL : Beginning/intermediate Level. Washington, DC: United States Department of State, 2003.
MLA-referens (9:e uppl.)Peterson, Patricia Wilcox. Developing Writing: Writing Skills Practice Book for EFL : Beginning/intermediate Level. United States Department of State, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.