(2000). Helicopter landing take-off area not covered by A.O. No. AGA 14.03, series of 1973. Philippine Star.
Chicago-referens (17:e uppl.)"Helicopter Landing Take-off Area Not Covered by A.O. No. AGA 14.03, Series of 1973." Philippine Star 2000.
MLA-referens (9:e uppl.)"Helicopter Landing Take-off Area Not Covered by A.O. No. AGA 14.03, Series of 1973." Philippine Star, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.