APA (7 वां संस्करण) प्रशस्ति पत्र

Voorst, R. v., & Emblen-Jarrett, S. (2021). Once upon a time we ate animals: The future of food (First HarperOne edition.). HarperOne, an imprint of HarperCollinsPublishers.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Voorst, Roanne van, और Scott Emblen-Jarrett. Once upon a Time We Ate Animals: The Future of Food. First HarperOne edition. New York, NY: HarperOne, an imprint of HarperCollinsPublishers, 2021.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Voorst, Roanne van, और Scott Emblen-Jarrett. Once upon a Time We Ate Animals: The Future of Food. First HarperOne edition. HarperOne, an imprint of HarperCollinsPublishers, 2021.

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