John Jackman; Wendy Wren. (2013). Writing: Teacher's Guide 1 (Collins Primary Focus) (New edition.). HarperCollins UK.
Chicago-referens (17:e uppl.)John Jackman; Wendy Wren. Writing: Teacher's Guide 1 (Collins Primary Focus). New edition. HarperCollins UK, 2013.
MLA-referens (9:e uppl.)John Jackman; Wendy Wren. Writing: Teacher's Guide 1 (Collins Primary Focus). New edition. HarperCollins UK, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.