Cita APA (7th ed.)
Koch, L., & Haller, J. (1971). Geological Map of East Greenland 72°-76° N.Lat. <1: 250,000>. Reitzel.
Cita Chicago (17th ed.)
Koch, Lauge, i John Haller. Geological Map of East Greenland 72°-76° N.Lat. <1: 250,000>. Kopenhagen: Reitzel, 1971.
Cita MLA (9th ed.)
Koch, Lauge, i John Haller. Geological Map of East Greenland 72°-76° N.Lat. <1: 250,000>. Reitzel, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.