APA (7th ed.) Citation

Roberts, B. G., Jr. (1974). Horizontal-gradient acoustical ray-trace program TRIMAIN. Naval Research Laboratory.

Chicago Style (17th ed.) Citation

Roberts, B. G., Jr. Horizontal-gradient Acoustical Ray-trace Program TRIMAIN. Washington, D.C.: Naval Research Laboratory, 1974.

MLA (9th ed.) Citation

Roberts, B. G., Jr. Horizontal-gradient Acoustical Ray-trace Program TRIMAIN. Naval Research Laboratory, 1974.