Gaya APA

Inc, A, G. (1991). Model 800 Engineering Tiltmeter and Model 870 Readout Module (January 1991). United States of America: Applied Geomechanics Inc.

Gaya MLA

Inc, Applied, Geomechanics. "Model 800 Engineering Tiltmeter and Model 870 Readout Module". January 1991 United States of America: Applied Geomechanics Inc, 1991. Text.