Bernstrom, D., & Evans, S. (2020). Big Papa and the time machine (First edition.). Harper, an imprint of HarperCollins Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBernstrom, Daniel, और Shane Evans. Big Papa and the Time Machine. First edition. New York: Harper, an imprint of HarperCollins Publishers, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBernstrom, Daniel, और Shane Evans. Big Papa and the Time Machine. First edition. Harper, an imprint of HarperCollins Publishers, 2020.
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