Cita APA

Greenbaum, S., & Sidney Greenbaum and Gerald Nelson. (2002). An introduction to English grammar. England: Pearson education.

Chicago Style Citation

Greenbaum, Sidney, i Sidney Greenbaum and Gerald Nelson. An Introduction to English Grammar. England: Pearson education, 2002.

Cita MLA

Greenbaum, Sidney, i Sidney Greenbaum and Gerald Nelson. An Introduction to English Grammar. England: Pearson education, 2002.

Atenció: Aquestes cites poden no estar 100% correctes.