Cita APA (7th ed.)

Kopenhagen, W. (1987). Flieger-Jahrbuch 1987. Transpress.

Cita Chicago (17th ed.)

Kopenhagen, Wilfried. Flieger-Jahrbuch 1987. Berlin: Transpress, 1987.

Cita MLA (8th ed.)

Kopenhagen, Wilfried. Flieger-Jahrbuch 1987. Transpress, 1987.