(2000). Helicopter landing take-off area not covered by A.O. No. AGA 14.03, series of 1973. Philippine Star.
Chicago Style aipamena"Helicopter Landing Take-off Area Not Covered by A.O. No. AGA 14.03, Series of 1973." Philippine Star 2000.
MLA aipamena"Helicopter Landing Take-off Area Not Covered by A.O. No. AGA 14.03, Series of 1973." Philippine Star, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.