Hänvisningar gällande denna post
APA-referensUnited States. Government Printing Office. (1970). GPO sales publications reference file. Government Printing Office.
Chicago-stil citatUnited States. Government Printing Office. GPO Sales Publications Reference File. Washington, D.C.: Government Printing Office, 1970.
MLA-referensUnited States. Government Printing Office. GPO Sales Publications Reference File. Government Printing Office, 1970.
Harvard-stil citatUnited States. Government Printing Office. 1970. GPO sales publications reference file. Washington, D.C.: Government Printing Office.
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