SAJOK, Aping. Perhambaan Tradisional di Borneo Utara Zaman Kesultanan Sulu & Brunei. Sains Insani, [S. l.], v. 2, n. 2, p. 20–28, 2018. DOI: 10.33102/sainsinsani.vol2no2.33. Disponível em: http://sainsinsani.usim.edu.my/index.php/sainsinsani/article/view/33. Acesso em: 7 jul. 2025.