Παραπομπή APA

Heidmann, J. (1980). Relativistic cosmology: An introduction. Springer-Verlag.

Παραπομπή Chicago Style

Heidmann, Jean. Relativistic Cosmology: An Introduction. Berlin: Springer-Verlag, 1980.

Παραπομπή MLA

Heidmann, Jean. Relativistic Cosmology: An Introduction. Springer-Verlag, 1980.