McCallum, W. (2019). How to give up plastic: A guide to changing the world, one plastic bottle at a time. Penguin Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMcCallum, Will. How to Give Up Plastic: A Guide to Changing the World, One Plastic Bottle at a Time. New York: Penguin Books, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMcCallum, Will. How to Give Up Plastic: A Guide to Changing the World, One Plastic Bottle at a Time. Penguin Books, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.