APA (7th ed.) Citation

Grabenhorst, G. (1929). Zero hour. Brentano's.

Chicago Style (17th ed.) Citation

Grabenhorst, Georg. Zero Hour. New York: Brentano's, 1929.

MLA (9th ed.) Citation

Grabenhorst, Georg. Zero Hour. Brentano's, 1929.

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