Cita APA (7th ed.)

SpringerLink (Online service) & Liebscher, D. (2005). Cosmology. Springer-Verlag.

Cita Chicago (17th ed.)

SpringerLink (Online service) i Dierck-Ekkehard Liebscher. Cosmology. Berlin Heidelberg: Springer-Verlag, 2005.

Cita MLA (8th ed.)

SpringerLink (Online service) i Dierck-Ekkehard Liebscher. Cosmology. Springer-Verlag, 2005.