Schultz, A. "To Lose the Unspeakable": Folklore and Landscape in O. E. Rolvaag's "Giants in the Earth": April Schultz. Mapping American culture.(1992).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchultz, April. ""To Lose the Unspeakable": Folklore and Landscape in O. E. Rolvaag's "Giants in the Earth": April Schultz." Mapping American Culture.(1992) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रSchultz, April. ""To Lose the Unspeakable": Folklore and Landscape in O. E. Rolvaag's "Giants in the Earth": April Schultz." Mapping American Culture.(1992), .
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