Anthon Bjørnbo, A. (1912) “Robert E. Peary: The North Pole. With an introduction by Theodore Roosevelt. 116 illustrations from photographs. London 1910. 315 pp”., Geografisk Tidsskrift, 21. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/49665 (Set: 5 december 2025).