APA (7th ed.) Citation

Hoffmann, H., & Dietrich, O. (1938). Hitler in Italien. Hoffmann.

Chicago Style (17th ed.) Citation

Hoffmann, Heinrich, and Otto Dietrich. Hitler in Italien. Munich: Hoffmann, 1938.

MLA (8th ed.) Citation

Hoffmann, Heinrich, and Otto Dietrich. Hitler in Italien. Hoffmann, 1938.

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