Frederick, H. V. (2020). Really Truly (First edition.). Simon & Schuster Books for Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrederick, Heather Vogel. Really Truly. First edition. New York: Simon & Schuster Books for Young Readers, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrederick, Heather Vogel. Really Truly. First edition. Simon & Schuster Books for Young Readers, 2020.
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