APA (7th ed.) Citation

Petters, A. O., Levine, H., & Wambsganß, J. (2001). Singularity theory and gravitational lensing. Progress in mathematical physics.

Chicago Style (17th ed.) Citation

Petters, Arlie O., Harold Levine, and Joachim Wambsganß. "Singularity Theory and Gravitational Lensing." Progress in Mathematical Physics 2001.

MLA (9th ed.) Citation

Petters, Arlie O., et al. "Singularity Theory and Gravitational Lensing." Progress in Mathematical Physics, 2001.