Clark, T. L., Kuehner, K. J., & Nakadate, N. E. Language: Structure and use.
Cita Chicago (17th ed.)Clark, Thomas L., Karen J. Kuehner, i Neil E. Nakadate. Language: Structure and Use.
Cita MLA (8th ed.)Clark, Thomas L., et al. Language: Structure and Use.
Atenció: Aquestes cites poden no estar 100% correctes.