SAPTONO, Saptono; TIARTO, Tiarto. Berbagai Halangan Masuk pada Bisnis Penerbangan Berjadwal di Indonesia. Langit Biru: Jurnal Ilmiah Aviasi, indonesia, v. 9, n. 18, p. 13–27, 2014. DOI: 10.54147/langitbiru.v9i18.625. Disponível em: https://jurnal.overthinkingku.com/index.php/jurnal-ilmiah-aviasi/article/view/625. Acesso em: 15 may. 2026.