Fries, C. C. (1956). Teaching and learning English as a foreign language (12. print.). Univ. of Michigan Press.
Chicago-Zitierstil (17. Ausg.)Fries, Charles Carpenter. Teaching and Learning English as a Foreign Language. 12. print. Ann Arbor: Univ. of Michigan Press, 1956.
MLA-Zitierstil (9. Ausg.)Fries, Charles Carpenter. Teaching and Learning English as a Foreign Language. 12. print. Univ. of Michigan Press, 1956.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.