Annual report of the director /
Mount Wilson Observatory.
APA Citation
Mount Wilson Observatory., Bowen, I. S., Adams, W. Sydney., Hale, G. Ellery., Carnegie Institution of Washington. Annual report of the director. [Washington]: Carnegie Institution of Washington.
MLA Citation
Carnegie Institution of Washington, et al.. Annual Report of the Director. [Washington]: Carnegie Institution of Washington,
Warning: These citations may not always be complete (especially for serials).