APA (7th ed.) Citation

Viera, J., & Friedrich, H. (1934). Achtung! Achtung! Fliegeralarm! Franz Schneider.

Chicago Style (17th ed.) Citation

Viera, Josef, and Hans Friedrich. Achtung! Achtung! Fliegeralarm! Leipzig ; Wien: Franz Schneider, 1934.

MLA (8th ed.) Citation

Viera, Josef, and Hans Friedrich. Achtung! Achtung! Fliegeralarm! Franz Schneider, 1934.

Warning: These citations may not always be 100% accurate.