Cita APA (7th ed.)
Plag, I. (2015). Introduction to English linguistics (Third, revised and enlarged edition.). De Gruyter Mouton.
Cita Chicago (17th ed.)
Plag, Ingo. Introduction to English Linguistics. Third, revised and enlarged edition. Berlin, Germany ; Boston, Massachusetts: De Gruyter Mouton, 2015.
Cita MLA (9th ed.)
Plag, Ingo. Introduction to English Linguistics. Third, revised and enlarged edition. De Gruyter Mouton, 2015.
Atenció: Aquestes cites poden no estar 100% correctes.