Saputra, N. G., R. Sulistyowati, and A. Pardosi. “Analisis Ability to Pay Mahasiswa Politeknik Sahid Jakarta”. Jurnal Sains Terapan Pariwisata, vol. 5, no. 1, Feb. 2020, pp. 51-59, https://journal.polteksahid.ac.id/index.php/jstp/article/view/248.