(1928). "Graf Zeppelin" am Sonntag in New-York.
Cita Chicago (17th ed.)"Graf Zeppelin" Am Sonntag in New-York. 1928.
Cita MLA (8th ed.)"Graf Zeppelin" Am Sonntag in New-York. 1928.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)