APA (7th ed.) Citation

Freksa, F., & Preetorius, E. (1912). Phosphor. Georg Müller.

Chicago Style (17th ed.) Citation

Freksa, Friedrich, and Emil Preetorius. Phosphor. München: Georg Müller, 1912.

MLA (8th ed.) Citation

Freksa, Friedrich, and Emil Preetorius. Phosphor. Georg Müller, 1912.

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