APA (7th ed.) Citation

Schrödinger, E. (1956). Expanding universes. University Press.

Chicago Style (17th ed.) Citation

Schrödinger, Erwin. Expanding Universes. Cambridge [England]: University Press, 1956.

MLA (9th ed.) Citation

Schrödinger, Erwin. Expanding Universes. University Press, 1956.