APA-referens (7:e uppl.)

Langan, J. (2009). Sentence skills: A workbook for writers : form B (8th ed.). McGraw-Hill Higher Education.

Chicago-referens (17:e uppl.)

Langan, John. Sentence Skills: A Workbook for Writers : Form B. 8th ed. Boston: McGraw-Hill Higher Education, 2009.

MLA-referens (9:e uppl.)

Langan, John. Sentence Skills: A Workbook for Writers : Form B. 8th ed. McGraw-Hill Higher Education, 2009.