Cita APA (7th ed.)

Wren, P. (2007). Highschool english grammer and composition. S. Chand.

Cita Chicago (17th ed.)

Wren, P. Highschool English Grammer and Composition. New Delhi: S. Chand, 2007.

Cita MLA (9th ed.)

Wren, P. Highschool English Grammer and Composition. S. Chand, 2007.

Atenció: Aquestes cites poden no estar 100% correctes.