APA-viite (7. p.)
Langan, J. (1995). English skills with readings (3rd ed.). McGraw-Hill.
Chicago-viite (17. p.)
Langan, John. English Skills with Readings. 3rd ed. New York: McGraw-Hill, 1995.
MLA-viite (9. p.)
Langan, John. English Skills with Readings. 3rd ed. McGraw-Hill, 1995.
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