Sitter, W. d. 1. (1932). Kosmos: Course of six lectures on the development of our inisght into the structure of the Universe, delivered for the Lowell Institute in Boston, in November 1931. Cambridge, Massachusetts: Harvard University Press.
Chicago Style CitationSitter, Willem de 1872-1934. Kosmos: Course of Six Lectures On the Development of Our Inisght Into the Structure of the Universe, Delivered for the Lowell Institute in Boston, in November 1931. Cambridge, Massachusetts: Harvard University Press, 1932.
MLA CitationSitter, Willem de 1872-1934. Kosmos: Course of Six Lectures On the Development of Our Inisght Into the Structure of the Universe, Delivered for the Lowell Institute in Boston, in November 1931. Cambridge, Massachusetts: Harvard University Press, 1932.