APA (7th ed.) Citation

Gerhardt, C. (2018). The quantization of gravity. Fundamental theories of physics.

Chicago Style (17th ed.) Citation

Gerhardt, Claus. "The Quantization of Gravity." Fundamental Theories of Physics 2018.

MLA (9th ed.) Citation

Gerhardt, Claus. "The Quantization of Gravity." Fundamental Theories of Physics, 2018.

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