APA (7th ed.) Citation

De Ruggiero, G., & Becker, P. A. (1925). Italienische Philosophie. Hirt.

Chicago Style (17th ed.) Citation

De Ruggiero, Guido, and Philipp August Becker. Italienische Philosophie. Breslau: Hirt, 1925.

MLA (9th ed.) Citation

De Ruggiero, Guido, and Philipp August Becker. Italienische Philosophie. Hirt, 1925.

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