Cita APA

(1950). Annual report of the librarian og congress for the fiscal year ending june 30, 1949. Washington: United States Government Printing Office.

Citación estilo Chicago

Annual Report of the Librarian Og Congress for the Fiscal Year Ending June 30, 1949. Washington: United States Government Printing Office, 1950.

Cita MLA

Annual Report of the Librarian Og Congress for the Fiscal Year Ending June 30, 1949. Washington: United States Government Printing Office, 1950.