Valeri, M (2010). "High Visibility, Low Profile: The Shiʿa in Oman under Sultan Qaboos". International Journal of Middle East Studies. 42 (2): 251–268. doi:10.1017/S0020743810000048. S2CID163083793.
Hopper, Matthew S. (2019). "Review of 'A Sea of Debt: Law and Econinic Life in the Western Indian Ocean, 1780–1950'". The Arab Studies Journal. 27 (1): 171–175. ISSN1083-4753. JSTOR26732407.
Valeri, M (2010). "High Visibility, Low Profile: The Shiʿa in Oman under Sultan Qaboos". International Journal of Middle East Studies. 42 (2): 251–268. doi:10.1017/S0020743810000048. S2CID163083793.
Hopper, Matthew S. (2019). "Review of 'A Sea of Debt: Law and Econinic Life in the Western Indian Ocean, 1780–1950'". The Arab Studies Journal. 27 (1): 171–175. ISSN1083-4753. JSTOR26732407.