APA (7 वां संस्करण) प्रशस्ति पत्र
GUTTLER, F. (1988). PHENYLKETONURIA: 50 YEARS SINCE FOLLING'S DISCOVERY AND STILL EXPANDING OUR CLINICAL AND BIOCHEMICAL KNOWLEDGE.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
GUTTLER, F. PHENYLKETONURIA: 50 YEARS SINCE FOLLING'S DISCOVERY AND STILL EXPANDING OUR CLINICAL AND BIOCHEMICAL KNOWLEDGE. 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
GUTTLER, F. PHENYLKETONURIA: 50 YEARS SINCE FOLLING'S DISCOVERY AND STILL EXPANDING OUR CLINICAL AND BIOCHEMICAL KNOWLEDGE. 1988.
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