Gaya APA

Office, G, P. (1950). Annual Report of the Board of Regents of the Smithsonian Institution . Washington. DC.: Washington.United States Government Printing Office.

Gaya MLA

Office, Government, Printing. "Annual Report of the Board of Regents of the Smithsonian Institution". Washington. DC.: Washington.United States Government Printing Office, 1950. Koleksi Elektronik.