Cita APA (7th ed.)
Halliday, M. A. K., & Webster, J. (2005). Studies in English language. Continuum.
Cita Chicago (17th ed.)
Halliday, M. A. K., i Jonathan Webster. Studies in English Language. London ; New York: Continuum, 2005.
Cita MLA (9th ed.)
Halliday, M. A. K., i Jonathan Webster. Studies in English Language. Continuum, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.