Langan, J. (2009). Sentence skills: A workbook for writers : form B (8th ed.). McGraw-Hill Higher Education.
Chicago-Zitierstil (17. Ausg.)Langan, John. Sentence Skills: A Workbook for Writers : Form B. 8th ed. Boston: McGraw-Hill Higher Education, 2009.
MLA-Zitierstil (9. Ausg.)Langan, John. Sentence Skills: A Workbook for Writers : Form B. 8th ed. McGraw-Hill Higher Education, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.