APA (7th ed.) Citation

Eddington, A. S. S. (1946). The expanding universe. The University press.

Chicago Style (17th ed.) Citation

Eddington, Arthur Stanley Sir. The Expanding Universe. Cambridge [Eng.]: The University press, 1946.

MLA (9th ed.) Citation

Eddington, Arthur Stanley Sir. The Expanding Universe. The University press, 1946.