Strickland, W. H., & King, R. H. (1992). Characteristics of ultrasonic ranging sensors in an underground environment. U.S. Dept. of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationStrickland, W. H., and Robert H. King. Characteristics of Ultrasonic Ranging Sensors in an Underground Environment. Washington, DC: U.S. Dept. of the Interior, Bureau of Mines, 1992.
MLA (9th ed.) CitationStrickland, W. H., and Robert H. King. Characteristics of Ultrasonic Ranging Sensors in an Underground Environment. U.S. Dept. of the Interior, Bureau of Mines, 1992.
Warning: These citations may not always be 100% accurate.