Cita APA (7a ed.)

Petters, A. O., Levine, H., & Wambsganss, J. (2001). Singularity theory and gravitational lensing. Birkhäuser.

Cita Chicago Style (17a ed.)

Petters, Arlie O., Harold Levine, y Joachim Wambsganss. Singularity Theory and Gravitational Lensing. Boston [etc.]: Birkhäuser, 2001.

Cita MLA (9a ed.)

Petters, Arlie O., et al. Singularity Theory and Gravitational Lensing. Birkhäuser, 2001.