Sturkell, E. (1998). The origin of the marine Lockne impact structure, Jämtland. Dept. of Geology and Geochemistry, Stockholm University.
Citação do estilo Chicago (17ª ed.)Sturkell, Erik. The Origin of the Marine Lockne Impact Structure, Jämtland. Stockholm, Sweden: Dept. of Geology and Geochemistry, Stockholm University, 1998.
Citação MLA (8ª ed.)Sturkell, Erik. The Origin of the Marine Lockne Impact Structure, Jämtland. Dept. of Geology and Geochemistry, Stockholm University, 1998.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.