APA-viite (7. p.)

Sturkell, E. (1998). The origin of the marine Lockne impact structure, Jämtland. Dept. of Geology and Geochemistry, Stockholm University.

Chicago-viite (17. p.)

Sturkell, Erik. The Origin of the Marine Lockne Impact Structure, Jämtland. Stockholm, Sweden: Dept. of Geology and Geochemistry, Stockholm University, 1998.

MLA-viite (8. p.)

Sturkell, Erik. The Origin of the Marine Lockne Impact Structure, Jämtland. Dept. of Geology and Geochemistry, Stockholm University, 1998.