Cita APA (7a ed.)

Louis Fidge. (2011). Grammar and Punctuation: Pupil Book 3 (Collins Primary Focus) (New edition.). HarperCollins UK.

Cita Chicago Style (17a ed.)

Louis Fidge. Grammar and Punctuation: Pupil Book 3 (Collins Primary Focus). New edition. HarperCollins UK, 2011.

Cita MLA (9a ed.)

Louis Fidge. Grammar and Punctuation: Pupil Book 3 (Collins Primary Focus). New edition. HarperCollins UK, 2011.