ICAO okays standards to kickstart aviation emissions accord. IN Shipping Bulletin. Manila Bulletin.
Cita Chicago (17th ed.)"ICAO Okays Standards to Kickstart Aviation Emissions Accord. IN Shipping Bulletin." Manila Bulletin .
Cita MLA (9th ed.)"ICAO Okays Standards to Kickstart Aviation Emissions Accord. IN Shipping Bulletin." Manila Bulletin, .
Atenció: Aquestes cites poden no estar 100% correctes.