Granger, C., & Beaumont, D. New generation 1: Students'book. Heinemann.
Chicago Style (17th ed.) CitationGranger, Collin, and Digby Beaumont. New Generation 1: Students'book. Londres, Inglaterra: Heinemann.
MLA (9th ed.) CitationGranger, Collin, and Digby Beaumont. New Generation 1: Students'book. Heinemann.