Cita APA (7a ed.)

Louis Fidge. (2011). Grammar and Punctuation: Teacher's Guide 1 (Collins Primary Focus) (New edition.). HarperCollins UK.

Cita Chicago Style (17a ed.)

Louis Fidge. Grammar and Punctuation: Teacher's Guide 1 (Collins Primary Focus). New edition. HarperCollins UK, 2011.

Cita MLA (9a ed.)

Louis Fidge. Grammar and Punctuation: Teacher's Guide 1 (Collins Primary Focus). New edition. HarperCollins UK, 2011.

Precaución: Estas citas no son 100% exactas.