| Hartman, L. Dersjardins, j.(2007). Business Ethics. Thirdt Edition |
| Crane, A.(2004).Business Ethics. Fourth Edition. |
| by O. C. Ferrell, John Fraedrich, et al., Business Ethics: Ethical Decision Making & Cases (2018) |
| O.C. Ferrell, John Fraedrich and Linda Ferrell (2015, 2013). Business Ethics: Ethical Decision Making & Cases. Tenth Edition. Cengage Learning. 633 pages. |
| Barry L. Reece, Rhonda Brandt, Karen F. Howie (2011,2008). Effective Human Relations: Interpersonal and Organizational Applications, Eleventh Edition. South-Western, Cengage Learning. 447 pages. |