LEONARDO, Andre. Analisis Pengaruh Perceived Benefit, Free Mentality Dan Perceived Sacrifice Terhadap Attitude Toward Paying Dan Implikasinya Terhadap Willingness To Pay (Studi Pada Pengguna Joox VIP). Ultima Management : Jurnal Ilmu Manajemen, [S. l.], v. 8, n. 2, p. 32–53, 2016. DOI: 10.31937/manajemen.v8i2.591. Disponível em: https://ejournals.umn.ac.id/index.php/manajemen/article/view/591. Acesso em: 8 oct. 2025.