Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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