Oftedahl, C. (1960). Permian igneous rocks of the Oslo graben, Norway: Guide to excursions no. A11 and C7. Norwegian Government's Organizing Committee for the International Geological Congress.
Chicago Style (17th ed.) CitationOftedahl, Christoffer. Permian Igneous Rocks of the Oslo Graben, Norway: Guide to Excursions No. A11 and C7. Oslo: Norwegian Government's Organizing Committee for the International Geological Congress, 1960.
MLA (9th ed.) CitationOftedahl, Christoffer. Permian Igneous Rocks of the Oslo Graben, Norway: Guide to Excursions No. A11 and C7. Norwegian Government's Organizing Committee for the International Geological Congress, 1960.
Warning: These citations may not always be 100% accurate.