(2000). GSIS nets P31B in 1999. Philippine Star.
Chicago Style aipamena"GSIS Nets P31B in 1999." Philippine Star 2000.
MLA aipamena"GSIS Nets P31B in 1999." Philippine Star, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena