(1967). Smithsonian year 1967: Annual report of the Smithsonian Institution for the year ended 30 June 1967, including the financial report of the Executive Committee of the Board of Regents. Washington: Smithsonian Institution Press.
Παραπομπή Chicago StyleSmithsonian Year 1967: Annual Report of the Smithsonian Institution for the Year Ended 30 June 1967, Including the Financial Report of the Executive Committee of the Board of Regents. Washington: Smithsonian Institution Press, 1967.
Παραπομπή MLASmithsonian Year 1967: Annual Report of the Smithsonian Institution for the Year Ended 30 June 1967, Including the Financial Report of the Executive Committee of the Board of Regents. Washington: Smithsonian Institution Press, 1967.
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