SpringerLink (Online service), Frenkel, M., Rudolf, M., & Hommel, U. (2005). Risk Management: Challenge and Opportunity (Second Revised and Enlarged Edition.). Springer Berlin Heidelberg.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Michael Frenkel, Markus Rudolf, και Ulrich Hommel. Risk Management: Challenge and Opportunity. Second Revised and Enlarged Edition. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Risk Management: Challenge and Opportunity. Second Revised and Enlarged Edition. Springer Berlin Heidelberg, 2005.
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