1968 NASA authorization :
hearings before the Committee on Science and Astronautics, U.S. House of Representatives, Ninetieth Congress, first session, on H.R. 4450, H. R. 6470 (superseded by H. R. 10340).

APA Citation

United States. Congress. House. Committee on Science and Astronautics., United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Advanced Research and Technology., United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Space Science and Applications., United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Manned Space Flight. (1967). 1968 NASA authorization: hearings before the Committee on Science and Astronautics, U.S. House of Representatives, Ninetieth Congress, first session, on H.R. 4450, H. R. 6470 (superseded by H. R. 10340). Washington: U.S. Govt. Print. Off.

MLA Citation

United States. Congress. House. Committee on Science and Astronautics, United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Advanced Research and Technology, United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Space Science and Applications, and United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Manned Space Flight. 1968 NASA Authorization: Hearings Before the Committee On Science And Astronautics, U.S. House of Representatives, Ninetieth Congress, First Session, On H.R. 4450, H. R. 6470 (superseded by H. R. 10340). Washington: U.S. Govt. Print. Off, 1967.

Warning: These citations may not always be complete (especially for serials).