Vasilik, S. M. (2016). SQL practice problems: 57 beginning, intermediate, and advanced challenges for you to solve using a "learn-by-doing" approach. Amazon Fulfillment Poland Sp. z o.o.
Chicago-Zitierstil (17. Ausg.)Vasilik, Sylvia Moestl. SQL Practice Problems: 57 Beginning, Intermediate, and Advanced Challenges for You to Solve Using a "Learn-by-doing" Approach. Wrocław: Amazon Fulfillment Poland Sp. z o.o, 2016.
MLA-Zitierstil (9. Ausg.)Vasilik, Sylvia Moestl. SQL Practice Problems: 57 Beginning, Intermediate, and Advanced Challenges for You to Solve Using a "Learn-by-doing" Approach. Amazon Fulfillment Poland Sp. z o.o, 2016.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.