APA
Ungerer F., Schmid H., . (2006). An introduction to cognitive linguistics. New York: Longman.
Chicago
Ungerer Friedrich, Schmid Hans-Jörg, . 2006. An introduction to cognitive linguistics. New York: Longman.
Harvard
Ungerer F., Schmid H., . (2006). An introduction to cognitive linguistics. New York: Longman.
MLA
Ungerer Friedrich, Schmid Hans-Jörg, . An introduction to cognitive linguistics. New York: Longman. 2006.