Louis Fidge. (2011). Grammar and Punctuation: Pupil Book 2 (Collins Primary Focus) (New edition.). HarperCollins UK.
Chicago-referens (17:e uppl.)Louis Fidge. Grammar and Punctuation: Pupil Book 2 (Collins Primary Focus). New edition. HarperCollins UK, 2011.
MLA-referens (9:e uppl.)Louis Fidge. Grammar and Punctuation: Pupil Book 2 (Collins Primary Focus). New edition. HarperCollins UK, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.