APA (7th ed.) Citation

Vetlesen Symposium Columbia University & Woltjer, L. (1968). Galaxies and the universe. Columbia University Press.

Chicago Style (17th ed.) Citation

Vetlesen Symposium Columbia University and Lodewijk Woltjer. Galaxies and the Universe. New York: Columbia University Press, 1968.

MLA (8th ed.) Citation

Vetlesen Symposium Columbia University and Lodewijk Woltjer. Galaxies and the Universe. Columbia University Press, 1968.