Cita APA (7a ed.)

John Jackman; Wendy Wren. (2013). Writing: Introductory Pupil Book (Collins Primary Focus) (None.). HarperCollins UK.

Cita Chicago Style (17a ed.)

John Jackman; Wendy Wren. Writing: Introductory Pupil Book (Collins Primary Focus). None. HarperCollins UK, 2013.

Cita MLA (9a ed.)

John Jackman; Wendy Wren. Writing: Introductory Pupil Book (Collins Primary Focus). None. HarperCollins UK, 2013.