APA aipamena

Langan, J. (1987). Sentence skills: A workbook for writers. New York: McGraw-Hill.

Chicago Style aipamena

Langan, John. Sentence Skills: A Workbook for Writers. New York: McGraw-Hill, 1987.

MLA aipamena

Langan, John. Sentence Skills: A Workbook for Writers. New York: McGraw-Hill, 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.