APA
Trask R. L., . (2004). Key concepts in language and linguistics. London: Routledge.
Chicago
Trask R L, . 2004. Key concepts in language and linguistics. London: Routledge.
Harvard
Trask R. L., . (2004). Key concepts in language and linguistics. London: Routledge.
MLA
Trask R L, . Key concepts in language and linguistics. London: Routledge. 2004.