United States National Science Foundation. Scientific and technical personnel in the federal government: 1969. For sale by the Superintendent of Documents.
Chicago Style (17th ed.) CitationUnited States National Science Foundation. Scientific and Technical Personnel in the Federal Government: 1969. Washington: For sale by the Superintendent of Documents.
MLA (9th ed.) CitationUnited States National Science Foundation. Scientific and Technical Personnel in the Federal Government: 1969. For sale by the Superintendent of Documents.
Warning: These citations may not always be 100% accurate.