Sonka, A. L. (1981). Skillful reading: A text and workbook for students of English as a second language. Prentice-Hall.
Chicago-Zitierstil (17. Ausg.)Sonka, Amy L. Skillful Reading: A Text and Workbook for Students of English as a Second Language. Englewood Cliffs, NJ [u.a.]: Prentice-Hall, 1981.
MLA-Zitierstil (9. Ausg.)Sonka, Amy L. Skillful Reading: A Text and Workbook for Students of English as a Second Language. Prentice-Hall, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.