APA (7th ed.) Citation

Barrett, J. W., & Crane, L. (2000). A Lorentzian Signature Model for Quantum General Relativity.

Chicago Style (17th ed.) Citation

Barrett, John W., and Louis Crane. A Lorentzian Signature Model for Quantum General Relativity. 2000.

MLA (9th ed.) Citation

Barrett, John W., and Louis Crane. A Lorentzian Signature Model for Quantum General Relativity. 2000.

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