Impey, G., & Underhill, N. (1994). The ELT manager's handbook: Practical advice on managing a successful language school. Heinemann English Language Teaching.
Chicago-Zitierstil (17. Ausg.)Impey, Graham, und Nic Underhill. The ELT Manager's Handbook: Practical Advice on Managing a Successful Language School. Oxford: Heinemann English Language Teaching, 1994.
MLA-Zitierstil (8. Ausg.)Impey, Graham, und Nic Underhill. The ELT Manager's Handbook: Practical Advice on Managing a Successful Language School. Heinemann English Language Teaching, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.