Langan, J. (2009). Sentence skills: A workbook for writers : form B (8th ed.). McGraw-Hill Higher Education.
Цитирование в стиле Чикаго (17-е изд.)Langan, John. Sentence Skills: A Workbook for Writers : Form B. 8th ed. Boston: McGraw-Hill Higher Education, 2009.
Цитирование MLA (9-е изд.)Langan, John. Sentence Skills: A Workbook for Writers : Form B. 8th ed. McGraw-Hill Higher Education, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.