Aviation in Focus. EDIPUCRS - Editora Universitaria da PUCRS.
Cita Chicago (17th ed.)Aviation in Focus. EDIPUCRS - Editora Universitaria da PUCRS.
Cita MLA (9th ed.)Aviation in Focus. EDIPUCRS - Editora Universitaria da PUCRS.
Atenció: Aquestes cites poden no estar 100% correctes.