Rach, R. (1996). Easy German exercises: Practice for beginners. Passport Books.
Citazione stile Chigago Style (17a edizione)Rach, Ruth. Easy German Exercises: Practice for Beginners. Lincolnwood, Ill: Passport Books, 1996.
Citatione MLA (9a ed.)Rach, Ruth. Easy German Exercises: Practice for Beginners. Passport Books, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.