Walstad William B. (2008). Study Guide for Use with Economics, 18th Edition. NewYork: Mc Graw-Hill.
Chicago ZitierstilWalstad William B. Study Guide for Use With Economics, 18th Edition. NewYork: Mc Graw-Hill, 2008.
MLA ZitierstilWalstad William B. Study Guide for Use With Economics, 18th Edition. NewYork: Mc Graw-Hill, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.