APA (7th ed.) Citation

Pirenne, H., & Arnheim, F. H. (1899). Geschichte Belgiens. F. A. Perthes.

Chicago Style (17th ed.) Citation

Pirenne, Henri, and Fritz Heinrich Arnheim. Geschichte Belgiens. Gotha: F. A. Perthes, 1899.

MLA (8th ed.) Citation

Pirenne, Henri, and Fritz Heinrich Arnheim. Geschichte Belgiens. F. A. Perthes, 1899.