APA
(1950). Annual report of the board of regents of the smithsonian institution showing the operations, expenditures and condition of the institution for the year ended June 30, 1949. Washington, USA: U.S. Government Printing Office.
Chicago
1950. Annual report of the board of regents of the smithsonian institution showing the operations, expenditures and condition of the institution for the year ended June 30, 1949. Washington, USA: U.S. Government Printing Office.
Harvard
(1950). Annual report of the board of regents of the smithsonian institution showing the operations, expenditures and condition of the institution for the year ended June 30, 1949. Washington, USA: U.S. Government Printing Office.
MLA
Annual report of the board of regents of the smithsonian institution showing the operations, expenditures and condition of the institution for the year ended June 30, 1949. Washington, USA: U.S. Government Printing Office. 1950.