Gaya APA

Materials, A, S, O, T. (2012). ASTM D7764-12 Standard Practice Pre-Installation Acceptance Testing of Vibrating Wire Piezometers . America: ASTM International.

Gaya MLA

Materials, American, Society, Of, Testing. "ASTM D7764-12 Standard Practice Pre-Installation Acceptance Testing of Vibrating Wire Piezometers". America: ASTM International, 2012. Text.