Cita APA (7th ed.)
MORTENSEN, S. (1954). The Norway Year Book - 1954 (5 ed.). Johan Grundt Tanum.
Cita Chicago (17th ed.)
MORTENSEN, Sverre. The Norway Year Book - 1954. 5 ed. Oslo: Johan Grundt Tanum, 1954.
Cita MLA (9th ed.)
MORTENSEN, Sverre. The Norway Year Book - 1954. 5 ed. Johan Grundt Tanum, 1954.
Atenció: Aquestes cites poden no estar 100% correctes.