Prepared under the direction of Naval Research, Undersea Warfare Branch (Code 466)
Geiger, P. Harold. (1953). Noise-reduction manual. [Ann Arbor]: Engineering Research Institute, University of Michigan.
Geiger, Paul Harold, 1896-. Noise-reduction Manual. [Ann Arbor]: Engineering Research Institute, University of Michigan, 1953.
Warning: These citations may not always be complete (especially for serials).