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24. Introduction to information systems Marakas, George M. New York : McGraw-Hill Irwin, c2013. BUS307
27. Operations management: sustainability and supply chain management Heizer, Jay, Hoboken, NJ : Pearson, [2023] BUS305
28. Crisis management: leading in the new strategy landscape Crandall, William, 1956-, USA : Independently published, 2021. PRA450
30. Crisis management: planning for the inevitable Fink, Steven. Lincoln, NE : iUniverse, Inc., c2002. PRA450
