Zemach, D. E., & Wisniewska, I. (2014). Open mind: Student's book and workbook pack starter level (Second edition.). Macmillan Education.
Lua i Stíl Chicago (17ú heag.)Zemach, Dorothy E., agus Ingrid Wisniewska. Open Mind: Student's Book and Workbook Pack Starter Level. Second edition. London: Macmillan Education, 2014.
Lua MLA (9ú heag.)Zemach, Dorothy E., agus Ingrid Wisniewska. Open Mind: Student's Book and Workbook Pack Starter Level. Second edition. Macmillan Education, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.