Cita APA

Hubble,Edwin. (1937). The Observational Approach to Cosmology (1937.). Oxford at the University Press.

Chicago Edition Citation

Hubble,Edwin. The Observational Approach to Cosmology. 1937. London: Oxford at the University Press, 1937.

Cita MLA

Hubble,Edwin. The Observational Approach to Cosmology. 1937. Oxford at the University Press, 1937.

Atenció: Aquestes cites poden no estar 100% correctes.