Spencer, D., Bandis, A., & Toth, M. (2021). Gateway to the world A1. Macmillan Education.
Chicago Style (17th ed.) CitationSpencer, David, Angela Bandis, and Maria Toth. Gateway to the World A1. Londres: Macmillan Education, 2021.
MLA (9th ed.) CitationSpencer, David, et al. Gateway to the World A1. Macmillan Education, 2021.