Cita APA (7a ed.)

(1969). National Science Research Data Processing and Information Retrieval System; Hearings before the General Subcommittee on Education ... Ninety-First Congress, First Session on H.R. 8809 ... April 29 and 30, 1969.

Cita Chicago Style (17a ed.)

National Science Research Data Processing and Information Retrieval System; Hearings Before the General Subcommittee on Education ... Ninety-First Congress, First Session on H.R. 8809 ... April 29 and 30, 1969. 1969.

Cita MLA (9a ed.)

National Science Research Data Processing and Information Retrieval System; Hearings Before the General Subcommittee on Education ... Ninety-First Congress, First Session on H.R. 8809 ... April 29 and 30, 1969. 1969.