Ahlstrand, J. T. Berlin and the Swedish Avant-Garde: GAN, Nell Walden, Viking Eggeling, Axel Olson and Bengt Österblom / Jan Thorsten Ahlstrand. A cultural history of the avant-garde in the Nordic countries 1900 - 1925.(2012).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAhlstrand, Jan Thorsten. "Berlin and the Swedish Avant-Garde: GAN, Nell Walden, Viking Eggeling, Axel Olson and Bengt Österblom / Jan Thorsten Ahlstrand." A Cultural History of the Avant-garde in the Nordic Countries 1900 - 1925.(2012) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रAhlstrand, Jan Thorsten. "Berlin and the Swedish Avant-Garde: GAN, Nell Walden, Viking Eggeling, Axel Olson and Bengt Österblom / Jan Thorsten Ahlstrand." A Cultural History of the Avant-garde in the Nordic Countries 1900 - 1925.(2012), .
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