Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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