Gaya APA

ASTM, . (1997). ASTM E 697 -96 Standard Practice for Use of Electron-Capture etectors in Gas Chromatograpy . : s.n..

Gaya MLA

ASTM, . "ASTM E 697 -96 Standard Practice for Use of Electron-Capture etectors in Gas Chromatograpy". : s.n., 1997. Diorama.