Aviation safety :
hearings before the Committee on Interstate and Foreign Commerce, House of Representatives, Ninetieth Congress, first and second sessions, on aviation safety.
APA Citation
United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics. (1968). Aviation safety: hearings before the Committee on Interstate and Foreign Commerce, House of Representatives, Ninetieth Congress, first and second sessions, on aviation safety. Washington: U.S. Govt. Print. Off.
MLA Citation
United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics. Aviation Safety: Hearings Before the Committee On Interstate And Foreign Commerce, House of Representatives, Ninetieth Congress, First And Second Sessions, On Aviation Safety. Washington: U.S. Govt. Print. Off, 1968.
Warning: These citations may not always be complete (especially for serials).