Royster, J. J., & Lester, M. (1996). Close Writer's choice grammar workbook. 11. Glencoe.
Cita Chicago (17th ed.)Royster, Jacqueline Jones, i Mark Lester. Close Writer's Choice Grammar Workbook. 11. New York: Glencoe, 1996.
Cita MLA (8th ed.)Royster, Jacqueline Jones, i Mark Lester. Close Writer's Choice Grammar Workbook. 11. Glencoe, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.