Bregstein, B. (2016). Complete Spanish step-by-step: The fastest way to achieve Spanish mastery. McGraw-Hill Education.
Chicago-Zitierstil (17. Ausg.)Bregstein, Barbara. Complete Spanish Step-by-step: The Fastest Way to Achieve Spanish Mastery. New York: McGraw-Hill Education, 2016.
MLA-Zitierstil (9. Ausg.)Bregstein, Barbara. Complete Spanish Step-by-step: The Fastest Way to Achieve Spanish Mastery. McGraw-Hill Education, 2016.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.