Roussell, A., & Calvert, W. E. (1941). Farms and churches in the mediaeval Norse settlements of Greenland. I kommission hos C.A. Reitzel.
Citace podle Chicago (17th ed.)Roussell, Aage, a W. E. Calvert. Farms and Churches in the Mediaeval Norse Settlements of Greenland. København: I kommission hos C.A. Reitzel, 1941.
Citace podle MLA (8th ed.)Roussell, Aage, a W. E. Calvert. Farms and Churches in the Mediaeval Norse Settlements of Greenland. I kommission hos C.A. Reitzel, 1941.
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