Ulrich Speck. (2018). X-Ray Contrast Media: Overview, Use and Pharmaceutical Aspects. Springer Nature.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUlrich Speck. X-Ray Contrast Media: Overview, Use and Pharmaceutical Aspects. Springer Nature, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUlrich Speck. X-Ray Contrast Media: Overview, Use and Pharmaceutical Aspects. Springer Nature, 2018.
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