United States. Congress. Senate. Committee on Aeronautical and Space Sciences & ProQuest (Firm). (1970). NASA operating plan for fiscal year 1970: Hearing, Ninety-first Congress, second session, February 2, 1970, Washington, D.C. U.S. Govt. Print. Off.
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Aeronautical and Space Sciences and ProQuest (Firm). NASA Operating Plan for Fiscal Year 1970: Hearing, Ninety-first Congress, Second Session, February 2, 1970, Washington, D.C. Washington: U.S. Govt. Print. Off, 1970.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Aeronautical and Space Sciences and ProQuest (Firm). NASA Operating Plan for Fiscal Year 1970: Hearing, Ninety-first Congress, Second Session, February 2, 1970, Washington, D.C. U.S. Govt. Print. Off, 1970.