Cita APA (7a ed.)

Ehlers, J. (1967). Relativity theory and astrophysics: : Relativity and Astrophysics. American Mathematical Society.

Cita Chicago Style (17a ed.)

Ehlers, Jurgen. Relativity Theory and Astrophysics: : Relativity and Astrophysics. Providence, Rhode Island: American Mathematical Society, 1967.

Cita MLA (9a ed.)

Ehlers, Jurgen. Relativity Theory and Astrophysics: : Relativity and Astrophysics. American Mathematical Society, 1967.