APA-viite (7. p.)
Langan, J. (1998). Sentence skills: A workbook for writers : form A (6th ed.). McGraw-Hill.
Chicago-viite (17. p.)
Langan, John. Sentence Skills: A Workbook for Writers : Form A. 6th ed. Boston: McGraw-Hill, 1998.
MLA-viite (9. p.)
Langan, John. Sentence Skills: A Workbook for Writers : Form A. 6th ed. McGraw-Hill, 1998.
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