Schaar, G. (1962). Petrographical and geological investigations in the Sylene-Skardörsfjell region, Sör-Tröndelag, Norway. University of Amsterdam, Geological Institute.
Lua i Stíl Chicago (17ú heag.)Schaar, Gerardus. Petrographical and Geological Investigations in the Sylene-Skardörsfjell Region, Sör-Tröndelag, Norway. Amsterdam: University of Amsterdam, Geological Institute, 1962.
Lua MLA (8ú heag.)Schaar, Gerardus. Petrographical and Geological Investigations in the Sylene-Skardörsfjell Region, Sör-Tröndelag, Norway. University of Amsterdam, Geological Institute, 1962.
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