Crystal, D. (1974). What is linguistics? (3rd ed.). Edward Arnold.
Chicago Edition CitationCrystal, David. What Is Linguistics? 3rd ed. London: Edward Arnold, 1974.
Cita MLACrystal, David. What Is Linguistics? 3rd ed. Edward Arnold, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.