McCallum, A., Strong, W., & Thoburn, T. (1998). Language arts today (Classic edition.). McGraw-Hill School Division.
Cita Chicago (17th ed.)McCallum, Ann, William Strong, i Tina Thoburn. Language Arts Today. Classic edition. New York: McGraw-Hill School Division, 1998.
Cita MLA (8th ed.)McCallum, Ann, et al. Language Arts Today. Classic edition. McGraw-Hill School Division, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.