Fries, C. C. (1967). Teaching and learning English as a foreign language (21. print.). Univ. of Michigan Press.
Chicago-Zitierstil (17. Ausg.)Fries, Charles Carpenter. Teaching and Learning English as a Foreign Language. 21. print. Ann Arbor: Univ. of Michigan Press, 1967.
MLA-Zitierstil (9. Ausg.)Fries, Charles Carpenter. Teaching and Learning English as a Foreign Language. 21. print. Univ. of Michigan Press, 1967.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.