Glencoe Publishing Co. Writer's choice: Grammar and composition (Texas edition.).
Citazione stile Chigago Style (17a edizione)Glencoe Publishing Co. Writer's Choice: Grammar and Composition. Texas edition.
Citatione MLA (8a ed.)Glencoe Publishing Co. Writer's Choice: Grammar and Composition. Texas edition.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.