Maskapai penerbangan: Perbedaan antara revisi
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== Referensi ==
*{{id}} [http://www.tiket-pesawat-online.com/ Situs resmi penjualan tiket pesawat via internet]
"Flying Off Course: The Economics of International Airlines," 3rd edition. Rigas Doganis, Routledge, New York, 2002.
"The Airline Business in the 21st Century." Rigas Doganis, Routledge, New York, 2001.
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