Richard Lionheart dan Shalahuddin Al Ayyubi dalam perebutan Kota Suci Yerusalem. FACTUM: Jurnal Sejarah dan Pendidikan Sejarah, [S. l.], v. 12, n. 2, p. 139–148, 2023. Disponível em: https://ejournal-social.upi.edu/factum/article/view/174. Acesso em: 1 jul. 2026.