Robert M Sherfield, R. J. M. a. P. G. M. (2005). Cornerstone: Developing Soft Skills (4th ed.). Dorling Kindersley / Pearson Education.
Styl ChicagoRobert M Sherfield, Rhonda J Montgomery and Patricia G Moody. Cornerstone: Developing Soft Skills. 4th ed. Dorling Kindersley / Pearson Education, 2005.
Citace podle MLARobert M Sherfield, Rhonda J Montgomery and Patricia G Moody. Cornerstone: Developing Soft Skills. 4th ed. Dorling Kindersley / Pearson Education, 2005.
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