Holtzblatt, M. A. International political risk: Historical, insurance, and accounting aspects. University Microfilms International.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHoltzblatt, Mark A. International Political Risk: Historical, Insurance, and Accounting Aspects. Ann Arbor, Mich.: University Microfilms International.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHoltzblatt, Mark A. International Political Risk: Historical, Insurance, and Accounting Aspects. University Microfilms International.
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