MLA

Collas, Peter, and David Klein. The Dirac Equation In Curved Spacetime. Springer International Publishing, 2019.

APA

Collas, P., & Klein, D. (2019). The Dirac Equation in Curved Spacetime. Springer International Publishing.

Chicago

Collas, Peter, and David Klein. The Dirac Equation In Curved Spacetime. : Springer International Publishing, 2019.