Wren, P. (2005). High School: English grammar & composition. S. Chand.
Cita Chicago (17th ed.)Wren, P.C. High School: English Grammar & Composition. New Delhi: S. Chand, 2005.
Cita MLA (8th ed.)Wren, P.C. High School: English Grammar & Composition. S. Chand, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.