Axe, J. (2019). The collagen diet: A 28-day plan for sustained weight loss, glowing skin, great gut health, and a younger you (First edition.). Little, Brown Spark.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAxe, Josh. The Collagen Diet: A 28-day Plan for Sustained Weight Loss, Glowing Skin, Great Gut Health, and a Younger You. First edition. New York: Little, Brown Spark, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAxe, Josh. The Collagen Diet: A 28-day Plan for Sustained Weight Loss, Glowing Skin, Great Gut Health, and a Younger You. First edition. Little, Brown Spark, 2019.
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