Cita APA (7th ed.)

Illing, W. (1957). Start in den Himmel. Wunderlich.

Cita Chicago (17th ed.)

Illing, Walter. Start in Den Himmel. Leipzig: Wunderlich, 1957.

Cita MLA (8th ed.)

Illing, Walter. Start in Den Himmel. Wunderlich, 1957.