(1992). Geotextiles. Exxon Chemical Geopolymers.
Chicago Style aipamenaGeotextiles. Exxon Chemical Geopolymers, 1992.
MLA aipamenaGeotextiles. Exxon Chemical Geopolymers, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena