Cita APA (7th ed.)

Christison, M., Christian, D., Duff, P., & Spada, N. M. (2015). Teaching and learning English grammar: Research findings and future directions. Routledge.

Cita Chicago (17th ed.)

Christison, MaryAnn, Donna Christian, Patricia Duff, i Nina Margaret Spada. Teaching and Learning English Grammar: Research Findings and Future Directions. New York, New York: Routledge, 2015.

Cita MLA (9th ed.)

Christison, MaryAnn, et al. Teaching and Learning English Grammar: Research Findings and Future Directions. Routledge, 2015.