(1998). Chlorine content of water increased to ensure postability. Manila Times.
Chicago Style aipamena"Chlorine Content of Water Increased to Ensure Postability." Manila Times 1998.
MLA aipamena"Chlorine Content of Water Increased to Ensure Postability." Manila Times, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.