Cita APA (7th ed.)
Kummel, B. (1953). Dansk Pearyland-Ekspedition 1947-50: Middle triassic Ammonites from Peary Land. Reitzel.
Cita Chicago (17th ed.)
Kummel, Bernhard. Dansk Pearyland-Ekspedition 1947-50: Middle Triassic Ammonites from Peary Land. København: Reitzel, 1953.
Cita MLA (9th ed.)
Kummel, Bernhard. Dansk Pearyland-Ekspedition 1947-50: Middle Triassic Ammonites from Peary Land. Reitzel, 1953.
Atenció: Aquestes cites poden no estar 100% correctes.