Hull, A. L. (1953). Fries American English series: For the study of English as a second language. D. C. Heath and Company.
Chicago-Zitierstil (17. Ausg.)Hull, Adrian L. Fries American English Series: For the Study of English as a Second Language. Boston: D. C. Heath and Company, 1953.
MLA-Zitierstil (9. Ausg.)Hull, Adrian L. Fries American English Series: For the Study of English as a Second Language. D. C. Heath and Company, 1953.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.