Παραπομπή σε μορφή APA (7η εκδ.)

Schaar, G. (1962). Petrographical and geological investigations in the Sylene-Skardörsfjell region, Sör-Tröndelag, Norway. University of Amsterdam, Geological Institute.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schaar, Gerardus. Petrographical and Geological Investigations in the Sylene-Skardörsfjell Region, Sör-Tröndelag, Norway. Amsterdam: University of Amsterdam, Geological Institute, 1962.

Παραπομπή σε μορφή MLA (8th εκδ.)

Schaar, Gerardus. Petrographical and Geological Investigations in the Sylene-Skardörsfjell Region, Sör-Tröndelag, Norway. University of Amsterdam, Geological Institute, 1962.