Adkins, J. (2006). The prentice hall grammar workbook (Second edition.). Pearson/Prentice-Hall.
Chicago Style (17th ed.) ZitazioaAdkins, Jeanette. The Prentice Hall Grammar Workbook. Second edition. Upper Saddle River: Pearson/Prentice-Hall, 2006.
MLA (9th ed.) ZitazioaAdkins, Jeanette. The Prentice Hall Grammar Workbook. Second edition. Pearson/Prentice-Hall, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.