Norwegian Academy of Science and Letters in Oslo. (1925). Arbok. Universitetsforlaget.
Citação do estilo Chicago (17ª ed.)Norwegian Academy of Science and Letters in Oslo. Arbok. Oslo: Universitetsforlaget, 1925.
Citação MLA (8ª ed.)Norwegian Academy of Science and Letters in Oslo. Arbok. Universitetsforlaget, 1925.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.