Koch, L. (1929). Stratigraphy of Greenland: <With 8 Fig. in the Text>. Levin & Munksgaard.
Chicago Style aipamenaKoch, Lauge. Stratigraphy of Greenland: <With 8 Fig. in the Text>. Copenhagen: Levin & Munksgaard, 1929.
MLA aipamenaKoch, Lauge. Stratigraphy of Greenland: <With 8 Fig. in the Text>. Levin & Munksgaard, 1929.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.