Ellison, H. (2020). Avengers epic collection: this beachhead earth: This beachhead earth (Collected.). Marvel Worldwide, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEllison, Harlan. Avengers Epic Collection: This Beachhead Earth: This Beachhead Earth. Collected. Cleveland: Marvel Worldwide, Inc., 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEllison, Harlan. Avengers Epic Collection: This Beachhead Earth: This Beachhead Earth. Collected. Marvel Worldwide, Inc., 2020.
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