Cita APA (7th ed.)
Quirk, R., & Greenbaum, S. (2016). A university grammar of english (4th ed.). Longman , Pearson Education.
Cita Chicago (17th ed.)
Quirk, Randolph, i Sidney Greenbaum. A University Grammar of English. 4th ed. New Delhi: Longman , Pearson Education, 2016.
Cita MLA (9th ed.)
Quirk, Randolph, i Sidney Greenbaum. A University Grammar of English. 4th ed. Longman , Pearson Education, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.